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CHANGELOG.md
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CHANGELOG.md
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# cuDF 23.04.00 (6 Apr 2023)
## 🚨 Breaking Changes
- Pin `dask` and `distributed` for release ([#13070](https://github.com/rapidsai/cudf/pull/13070)) [@galipremsagar](https://github.com/galipremsagar)
- Declare a different name for nan_equality.UNEQUAL to prevent Cython warnings. ([#12947](https://github.com/rapidsai/cudf/pull/12947)) [@bdice](https://github.com/bdice)
- Update minimum `pandas` and `numpy` pinnings ([#12887](https://github.com/rapidsai/cudf/pull/12887)) [@galipremsagar](https://github.com/galipremsagar)
- Deprecate `names` & `dtype` in `Index.copy` ([#12825](https://github.com/rapidsai/cudf/pull/12825)) [@galipremsagar](https://github.com/galipremsagar)
- Deprecate `Index.is_*` methods ([#12820](https://github.com/rapidsai/cudf/pull/12820)) [@galipremsagar](https://github.com/galipremsagar)
- Deprecate `datetime_is_numeric` from `describe` ([#12818](https://github.com/rapidsai/cudf/pull/12818)) [@galipremsagar](https://github.com/galipremsagar)
- Deprecate `na_sentinel` in `factorize` ([#12817](https://github.com/rapidsai/cudf/pull/12817)) [@galipremsagar](https://github.com/galipremsagar)
- Make string methods return a Series with a useful Index ([#12814](https://github.com/rapidsai/cudf/pull/12814)) [@shwina](https://github.com/shwina)
- Produce useful guidance on overflow error in `to_csv` ([#12705](https://github.com/rapidsai/cudf/pull/12705)) [@wence-](https://github.com/wence-)
- Move `strings_udf` code into cuDF ([#12669](https://github.com/rapidsai/cudf/pull/12669)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Remove cudf::strings::repeat_strings_output_sizes and optional parameter from cudf::strings::repeat_strings ([#12609](https://github.com/rapidsai/cudf/pull/12609)) [@davidwendt](https://github.com/davidwendt)
- Replace message parsing with throwing more specific exceptions ([#12426](https://github.com/rapidsai/cudf/pull/12426)) [@vyasr](https://github.com/vyasr)
## 🐛 Bug Fixes
- Fix memcheck script to execute only _TEST files found in bin/gtests/libcudf ([#13006](https://github.com/rapidsai/cudf/pull/13006)) [@davidwendt](https://github.com/davidwendt)
- Fix `DataFrame` constructor to broadcast scalar inputs properly ([#12997](https://github.com/rapidsai/cudf/pull/12997)) [@galipremsagar](https://github.com/galipremsagar)
- Drop `force_nullable_schema` from chunked parquet writer ([#12996](https://github.com/rapidsai/cudf/pull/12996)) [@galipremsagar](https://github.com/galipremsagar)
- Fix gtest column utility comparator diff reporting ([#12995](https://github.com/rapidsai/cudf/pull/12995)) [@davidwendt](https://github.com/davidwendt)
- Handle index names while performing `groupby` ([#12992](https://github.com/rapidsai/cudf/pull/12992)) [@galipremsagar](https://github.com/galipremsagar)
- Fix `__setitem__` on string columns when the scalar value ends in a null byte ([#12991](https://github.com/rapidsai/cudf/pull/12991)) [@wence-](https://github.com/wence-)
- Fix `sort_values` when column is all empty strings ([#12988](https://github.com/rapidsai/cudf/pull/12988)) [@eriknw](https://github.com/eriknw)
- Remove unused variable and fix memory issue in ORC writer ([#12984](https://github.com/rapidsai/cudf/pull/12984)) [@ttnghia](https://github.com/ttnghia)
- Pre-emptive fix for upstream `dask.dataframe.read_parquet` changes ([#12983](https://github.com/rapidsai/cudf/pull/12983)) [@rjzamora](https://github.com/rjzamora)
- Remove MANIFEST.in use auto-generated one for sdists and package_data for wheels ([#12960](https://github.com/rapidsai/cudf/pull/12960)) [@vyasr](https://github.com/vyasr)
- Update to use rapids-export(COMPONENTS) feature. ([#12959](https://github.com/rapidsai/cudf/pull/12959)) [@robertmaynard](https://github.com/robertmaynard)
- cudftestutil supports static gtest dependencies ([#12957](https://github.com/rapidsai/cudf/pull/12957)) [@robertmaynard](https://github.com/robertmaynard)
- Include gtest in build environment. ([#12956](https://github.com/rapidsai/cudf/pull/12956)) [@vyasr](https://github.com/vyasr)
- Correctly handle scalar indices in `Index.__getitem__` ([#12955](https://github.com/rapidsai/cudf/pull/12955)) [@wence-](https://github.com/wence-)
- Avoid building cython twice ([#12945](https://github.com/rapidsai/cudf/pull/12945)) [@galipremsagar](https://github.com/galipremsagar)
- Fix set index error for Series rolling window operations ([#12942](https://github.com/rapidsai/cudf/pull/12942)) [@galipremsagar](https://github.com/galipremsagar)
- Fix calculation of null counts for Parquet statistics ([#12938](https://github.com/rapidsai/cudf/pull/12938)) [@etseidl](https://github.com/etseidl)
- Preserve integer dtype of hive-partitioned column containing nulls ([#12930](https://github.com/rapidsai/cudf/pull/12930)) [@rjzamora](https://github.com/rjzamora)
- Use get_current_device_resource for intermediate allocations in COLLECT_LIST window code ([#12927](https://github.com/rapidsai/cudf/pull/12927)) [@karthikeyann](https://github.com/karthikeyann)
- Mark dlpack tensor deleter as noexcept to match PyCapsule_Destructor signature. ([#12921](https://github.com/rapidsai/cudf/pull/12921)) [@bdice](https://github.com/bdice)
- Fix conda recipe post-link.sh typo ([#12916](https://github.com/rapidsai/cudf/pull/12916)) [@pentschev](https://github.com/pentschev)
- min_rows and num_rows are swapped in ComputePageSizes declaration in Parquet reader ([#12886](https://github.com/rapidsai/cudf/pull/12886)) [@etseidl](https://github.com/etseidl)
- Expect cupy to now support bool arrays for dlpack. ([#12883](https://github.com/rapidsai/cudf/pull/12883)) [@vyasr](https://github.com/vyasr)
- Use python -m pytest for nightly wheel tests ([#12871](https://github.com/rapidsai/cudf/pull/12871)) [@bdice](https://github.com/bdice)
- Parquet writer column_size() should return a size_t ([#12870](https://github.com/rapidsai/cudf/pull/12870)) [@etseidl](https://github.com/etseidl)
- Fix cudf::hash_partition kernel launch error with decimal128 types ([#12863](https://github.com/rapidsai/cudf/pull/12863)) [@davidwendt](https://github.com/davidwendt)
- Fix an issue with parquet chunked reader undercounting string lengths. ([#12859](https://github.com/rapidsai/cudf/pull/12859)) [@nvdbaranec](https://github.com/nvdbaranec)
- Remove tokenizers pre-install pinning. ([#12854](https://github.com/rapidsai/cudf/pull/12854)) [@vyasr](https://github.com/vyasr)
- Fix parquet `RangeIndex` bug ([#12838](https://github.com/rapidsai/cudf/pull/12838)) [@rjzamora](https://github.com/rjzamora)
- Remove KAFKA_HOST_TEST from compute-sanitizer check ([#12831](https://github.com/rapidsai/cudf/pull/12831)) [@davidwendt](https://github.com/davidwendt)
- Make string methods return a Series with a useful Index ([#12814](https://github.com/rapidsai/cudf/pull/12814)) [@shwina](https://github.com/shwina)
- Tell cudf_kafka to use header-only fmt ([#12796](https://github.com/rapidsai/cudf/pull/12796)) [@vyasr](https://github.com/vyasr)
- Add `GroupBy.dtypes` ([#12783](https://github.com/rapidsai/cudf/pull/12783)) [@galipremsagar](https://github.com/galipremsagar)
- Fix a leak in a test and clarify some test names ([#12781](https://github.com/rapidsai/cudf/pull/12781)) [@revans2](https://github.com/revans2)
- Fix bug in all-null list due to join_list_elements special handling ([#12767](https://github.com/rapidsai/cudf/pull/12767)) [@karthikeyann](https://github.com/karthikeyann)
- Add try/except for expected null-schema error in read_parquet ([#12756](https://github.com/rapidsai/cudf/pull/12756)) [@rjzamora](https://github.com/rjzamora)
- Throw an exception if an unsupported page encoding is detected in Parquet reader ([#12754](https://github.com/rapidsai/cudf/pull/12754)) [@etseidl](https://github.com/etseidl)
- Fix a bug with `num_keys` in `_scatter_by_slice` ([#12749](https://github.com/rapidsai/cudf/pull/12749)) [@thomcom](https://github.com/thomcom)
- Bump pinned rapids wheel deps to 23.4 ([#12735](https://github.com/rapidsai/cudf/pull/12735)) [@sevagh](https://github.com/sevagh)
- Rework logic in cudf::strings::split_record to improve performance ([#12729](https://github.com/rapidsai/cudf/pull/12729)) [@davidwendt](https://github.com/davidwendt)
- Add `always_nullable` flag to Dremel encoding ([#12727](https://github.com/rapidsai/cudf/pull/12727)) [@divyegala](https://github.com/divyegala)
- Fix memcheck read error in compound segmented reduce ([#12722](https://github.com/rapidsai/cudf/pull/12722)) [@davidwendt](https://github.com/davidwendt)
- Fix faulty conditional logic in JIT `GroupBy.apply` ([#12706](https://github.com/rapidsai/cudf/pull/12706)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Produce useful guidance on overflow error in `to_csv` ([#12705](https://github.com/rapidsai/cudf/pull/12705)) [@wence-](https://github.com/wence-)
- Handle parquet list data corner case ([#12698](https://github.com/rapidsai/cudf/pull/12698)) [@nvdbaranec](https://github.com/nvdbaranec)
- Fix missing trailing comma in json writer ([#12688](https://github.com/rapidsai/cudf/pull/12688)) [@karthikeyann](https://github.com/karthikeyann)
- Remove child fom newCudaAsyncMemoryResource ([#12681](https://github.com/rapidsai/cudf/pull/12681)) [@abellina](https://github.com/abellina)
- Handle bool types in `round` API ([#12670](https://github.com/rapidsai/cudf/pull/12670)) [@galipremsagar](https://github.com/galipremsagar)
- Ensure all of device bitmask is initialized in from_arrow ([#12668](https://github.com/rapidsai/cudf/pull/12668)) [@wence-](https://github.com/wence-)
- Fix `from_arrow` to load a sliced arrow table ([#12665](https://github.com/rapidsai/cudf/pull/12665)) [@galipremsagar](https://github.com/galipremsagar)
- Fix dask-cudf read_parquet bug for multi-file aggregation ([#12663](https://github.com/rapidsai/cudf/pull/12663)) [@rjzamora](https://github.com/rjzamora)
- Fix AllocateLikeTest gtests reading uninitialized null-mask ([#12643](https://github.com/rapidsai/cudf/pull/12643)) [@davidwendt](https://github.com/davidwendt)
- Fix `find_common_dtype` and `values` to handle complex dtypes ([#12537](https://github.com/rapidsai/cudf/pull/12537)) [@galipremsagar](https://github.com/galipremsagar)
- Fix fetching of MultiIndex values when a label is passed ([#12521](https://github.com/rapidsai/cudf/pull/12521)) [@galipremsagar](https://github.com/galipremsagar)
- Fix `Series` comparison vs scalars ([#12519](https://github.com/rapidsai/cudf/pull/12519)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Allow casting from `UDFString` back to `StringView` to call methods in `strings_udf` ([#12363](https://github.com/rapidsai/cudf/pull/12363)) [@brandon-b-miller](https://github.com/brandon-b-miller)
## 📖 Documentation
- Fix `GroupBy.apply` doc examples rendering ([#12994](https://github.com/rapidsai/cudf/pull/12994)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- add sphinx building and s3 uploading for dask-cudf docs ([#12982](https://github.com/rapidsai/cudf/pull/12982)) [@quasiben](https://github.com/quasiben)
- Add developer documentation forbidding default parameters in detail APIs ([#12978](https://github.com/rapidsai/cudf/pull/12978)) [@vyasr](https://github.com/vyasr)
- Add README symlink for dask-cudf. ([#12946](https://github.com/rapidsai/cudf/pull/12946)) [@bdice](https://github.com/bdice)
- Remove return type from [@return doxygen tags ([#12908](https://github.com/rapidsai/cudf/pull/12908)) @davidwendt](https://github.com/return doxygen tags ([#12908](https://github.com/rapidsai/cudf/pull/12908)) @davidwendt)
- Fix docs build to be `pydata-sphinx-theme=0.13.0` compatible ([#12874](https://github.com/rapidsai/cudf/pull/12874)) [@galipremsagar](https://github.com/galipremsagar)
- Add skeleton API and prose documentation for dask-cudf ([#12725](https://github.com/rapidsai/cudf/pull/12725)) [@wence-](https://github.com/wence-)
- Enable doctests for GroupBy methods ([#12658](https://github.com/rapidsai/cudf/pull/12658)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Add comment about CUB patch for SegmentedSortInt.Bool gtest ([#12611](https://github.com/rapidsai/cudf/pull/12611)) [@davidwendt](https://github.com/davidwendt)
## 🚀 New Features
- Add JNI method for strings::replace multi variety ([#12979](https://github.com/rapidsai/cudf/pull/12979)) [@NVnavkumar](https://github.com/NVnavkumar)
- Add nunique aggregation support for cudf::segmented_reduce ([#12972](https://github.com/rapidsai/cudf/pull/12972)) [@davidwendt](https://github.com/davidwendt)
- Refactor orc chunked writer ([#12949](https://github.com/rapidsai/cudf/pull/12949)) [@ttnghia](https://github.com/ttnghia)
- Make Parquet writer `nullable` option application to single table writes ([#12933](https://github.com/rapidsai/cudf/pull/12933)) [@vuule](https://github.com/vuule)
- Refactor `io::orc::ProtobufWriter` ([#12877](https://github.com/rapidsai/cudf/pull/12877)) [@ttnghia](https://github.com/ttnghia)
- Make timezone table independent from ORC ([#12805](https://github.com/rapidsai/cudf/pull/12805)) [@vuule](https://github.com/vuule)
- Cache JIT `GroupBy.apply` functions ([#12802](https://github.com/rapidsai/cudf/pull/12802)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Implement initial support for avro logical types ([#6482) (#12788](https://github.com/rapidsai/cudf/pull/6482) (#12788)) [@tpn](https://github.com/tpn)
- Update `tests/column_utilities` to use `experimental::equality` row comparator ([#12777](https://github.com/rapidsai/cudf/pull/12777)) [@divyegala](https://github.com/divyegala)
- Update `distinct/unique_count` to `experimental::row` hasher/comparator ([#12776](https://github.com/rapidsai/cudf/pull/12776)) [@divyegala](https://github.com/divyegala)
- Update `hash_partition` to use `experimental::row::row_hasher` ([#12761](https://github.com/rapidsai/cudf/pull/12761)) [@divyegala](https://github.com/divyegala)
- Update `is_sorted` to use `experimental::row::lexicographic` ([#12752](https://github.com/rapidsai/cudf/pull/12752)) [@divyegala](https://github.com/divyegala)
- Update default data source in cuio reader benchmarks ([#12740](https://github.com/rapidsai/cudf/pull/12740)) [@PointKernel](https://github.com/PointKernel)
- Reenable stream identification library in CI ([#12714](https://github.com/rapidsai/cudf/pull/12714)) [@vyasr](https://github.com/vyasr)
- Add `regex_program` strings splitting java APIs and tests ([#12713](https://github.com/rapidsai/cudf/pull/12713)) [@cindyyuanjiang](https://github.com/cindyyuanjiang)
- Add `regex_program` strings replacing java APIs and tests ([#12701](https://github.com/rapidsai/cudf/pull/12701)) [@cindyyuanjiang](https://github.com/cindyyuanjiang)
- Add `regex_program` strings extract java APIs and tests ([#12699](https://github.com/rapidsai/cudf/pull/12699)) [@cindyyuanjiang](https://github.com/cindyyuanjiang)
- Variable fragment sizes for Parquet writer ([#12685](https://github.com/rapidsai/cudf/pull/12685)) [@etseidl](https://github.com/etseidl)
- Add segmented reduction support for fixed-point types ([#12680](https://github.com/rapidsai/cudf/pull/12680)) [@davidwendt](https://github.com/davidwendt)
- Move `strings_udf` code into cuDF ([#12669](https://github.com/rapidsai/cudf/pull/12669)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Add `regex_program` searching APIs and related java classes ([#12666](https://github.com/rapidsai/cudf/pull/12666)) [@cindyyuanjiang](https://github.com/cindyyuanjiang)
- Add logging to libcudf ([#12637](https://github.com/rapidsai/cudf/pull/12637)) [@vuule](https://github.com/vuule)
- Add compound aggregations to cudf::segmented_reduce ([#12573](https://github.com/rapidsai/cudf/pull/12573)) [@davidwendt](https://github.com/davidwendt)
- Convert `rank` to use to experimental row comparators ([#12481](https://github.com/rapidsai/cudf/pull/12481)) [@divyegala](https://github.com/divyegala)
- Use rapids-cmake parallel testing feature ([#12451](https://github.com/rapidsai/cudf/pull/12451)) [@robertmaynard](https://github.com/robertmaynard)
- Enable detection of undesired stream usage ([#12089](https://github.com/rapidsai/cudf/pull/12089)) [@vyasr](https://github.com/vyasr)
## 🛠️ Improvements
- Pin `dask` and `distributed` for release ([#13070](https://github.com/rapidsai/cudf/pull/13070)) [@galipremsagar](https://github.com/galipremsagar)
- Pin cupy in wheel tests to supported versions ([#13041](https://github.com/rapidsai/cudf/pull/13041)) [@vyasr](https://github.com/vyasr)
- Pin numba version ([#13001](https://github.com/rapidsai/cudf/pull/13001)) [@vyasr](https://github.com/vyasr)
- Rework gtests SequenceTest to remove using namepace cudf ([#12985](https://github.com/rapidsai/cudf/pull/12985)) [@davidwendt](https://github.com/davidwendt)
- Stop setting package version attribute in wheels ([#12977](https://github.com/rapidsai/cudf/pull/12977)) [@vyasr](https://github.com/vyasr)
- Move detail reduction functions to cudf::reduction::detail namespace ([#12971](https://github.com/rapidsai/cudf/pull/12971)) [@davidwendt](https://github.com/davidwendt)
- Remove default detail mrs: part7 ([#12970](https://github.com/rapidsai/cudf/pull/12970)) [@vyasr](https://github.com/vyasr)
- Remove default detail mrs: part6 ([#12969](https://github.com/rapidsai/cudf/pull/12969)) [@vyasr](https://github.com/vyasr)
- Remove default detail mrs: part5 ([#12968](https://github.com/rapidsai/cudf/pull/12968)) [@vyasr](https://github.com/vyasr)
- Remove default detail mrs: part4 ([#12967](https://github.com/rapidsai/cudf/pull/12967)) [@vyasr](https://github.com/vyasr)
- Remove default detail mrs: part3 ([#12966](https://github.com/rapidsai/cudf/pull/12966)) [@vyasr](https://github.com/vyasr)
- Remove default detail mrs: part2 ([#12965](https://github.com/rapidsai/cudf/pull/12965)) [@vyasr](https://github.com/vyasr)
- Remove default detail mrs: part1 ([#12964](https://github.com/rapidsai/cudf/pull/12964)) [@vyasr](https://github.com/vyasr)
- Add `force_nullable_schema` parameter to Parquet writer. ([#12952](https://github.com/rapidsai/cudf/pull/12952)) [@galipremsagar](https://github.com/galipremsagar)
- Declare a different name for nan_equality.UNEQUAL to prevent Cython warnings. ([#12947](https://github.com/rapidsai/cudf/pull/12947)) [@bdice](https://github.com/bdice)
- Remove remaining default stream parameters ([#12943](https://github.com/rapidsai/cudf/pull/12943)) [@vyasr](https://github.com/vyasr)
- Fix cudf::segmented_reduce gtest for ANY aggregation ([#12940](https://github.com/rapidsai/cudf/pull/12940)) [@davidwendt](https://github.com/davidwendt)
- Implement `groupby.head` and `groupby.tail` ([#12939](https://github.com/rapidsai/cudf/pull/12939)) [@wence-](https://github.com/wence-)
- Fix libcudf gtests to pass null-count=0 for empty validity masks ([#12923](https://github.com/rapidsai/cudf/pull/12923)) [@davidwendt](https://github.com/davidwendt)
- Migrate parquet encoding to use experimental row operators ([#12918](https://github.com/rapidsai/cudf/pull/12918)) [@PointKernel](https://github.com/PointKernel)
- Fix benchmarks coded in namespace cudf and using namespace cudf ([#12915](https://github.com/rapidsai/cudf/pull/12915)) [@karthikeyann](https://github.com/karthikeyann)
- Fix io/text gtests coded in namespace cudf::test ([#12914](https://github.com/rapidsai/cudf/pull/12914)) [@karthikeyann](https://github.com/karthikeyann)
- Pass `SCCACHE_S3_USE_SSL` to conda builds ([#12910](https://github.com/rapidsai/cudf/pull/12910)) [@ajschmidt8](https://github.com/ajschmidt8)
- Fix FST, JSON gtests & benchmarks coded in namespace cudf::test ([#12907](https://github.com/rapidsai/cudf/pull/12907)) [@karthikeyann](https://github.com/karthikeyann)
- Generate pyproject dependencies using dfg ([#12906](https://github.com/rapidsai/cudf/pull/12906)) [@vyasr](https://github.com/vyasr)
- Update libcudf counting functions to specify cudf::size_type ([#12904](https://github.com/rapidsai/cudf/pull/12904)) [@davidwendt](https://github.com/davidwendt)
- Fix `moto` env vars & pass `AWS_SESSION_TOKEN` to conda builds ([#12902](https://github.com/rapidsai/cudf/pull/12902)) [@ajschmidt8](https://github.com/ajschmidt8)
- Rewrite CSV writer benchmark with nvbench ([#12901](https://github.com/rapidsai/cudf/pull/12901)) [@PointKernel](https://github.com/PointKernel)
- Rework some code logic to reduce iterator and comparator inlining to improve compile time ([#12900](https://github.com/rapidsai/cudf/pull/12900)) [@davidwendt](https://github.com/davidwendt)
- Deprecate `line_terminator` in favor of `lineterminator` in `to_csv` ([#12896](https://github.com/rapidsai/cudf/pull/12896)) [@wence-](https://github.com/wence-)
- Add `stream` and `mr` parameters for `structs::detail::flatten_nested_columns` ([#12892](https://github.com/rapidsai/cudf/pull/12892)) [@ttnghia](https://github.com/ttnghia)
- Deprecate libcudf regex APIs accepting pattern strings directly ([#12891](https://github.com/rapidsai/cudf/pull/12891)) [@davidwendt](https://github.com/davidwendt)
- Remove default parameters from detail headers in include ([#12888](https://github.com/rapidsai/cudf/pull/12888)) [@vyasr](https://github.com/vyasr)
- Update minimum `pandas` and `numpy` pinnings ([#12887](https://github.com/rapidsai/cudf/pull/12887)) [@galipremsagar](https://github.com/galipremsagar)
- Implement `groupby.sample` ([#12882](https://github.com/rapidsai/cudf/pull/12882)) [@wence-](https://github.com/wence-)
- Update JNI build ENV default to gcc 11 ([#12881](https://github.com/rapidsai/cudf/pull/12881)) [@pxLi](https://github.com/pxLi)
- Change return type of `cudf::structs::detail::flatten_nested_columns` to smart pointer ([#12878](https://github.com/rapidsai/cudf/pull/12878)) [@ttnghia](https://github.com/ttnghia)
- Fix passing seed parameter to MurmurHash3_32 in cudf::hash() function ([#12875](https://github.com/rapidsai/cudf/pull/12875)) [@davidwendt](https://github.com/davidwendt)
- Remove manual artifact upload step in CI ([#12869](https://github.com/rapidsai/cudf/pull/12869)) [@ajschmidt8](https://github.com/ajschmidt8)
- Update to GCC 11 ([#12868](https://github.com/rapidsai/cudf/pull/12868)) [@bdice](https://github.com/bdice)
- Fix null hive-partition behavior in dask-cudf parquet ([#12866](https://github.com/rapidsai/cudf/pull/12866)) [@rjzamora](https://github.com/rjzamora)
- Update to protobuf>=4.21.6,<4.22. ([#12864](https://github.com/rapidsai/cudf/pull/12864)) [@bdice](https://github.com/bdice)
- Update RMM allocators ([#12861](https://github.com/rapidsai/cudf/pull/12861)) [@pentschev](https://github.com/pentschev)
- Improve performance for replace-multi for long strings ([#12858](https://github.com/rapidsai/cudf/pull/12858)) [@davidwendt](https://github.com/davidwendt)
- Drop Python 3.7 handling for pickle protocol 4 ([#12857](https://github.com/rapidsai/cudf/pull/12857)) [@jakirkham](https://github.com/jakirkham)
- Migrate as much as possible to pyproject.toml ([#12850](https://github.com/rapidsai/cudf/pull/12850)) [@vyasr](https://github.com/vyasr)
- Enable nbqa pre-commit hooks for isort and black. ([#12848](https://github.com/rapidsai/cudf/pull/12848)) [@bdice](https://github.com/bdice)
- Setting a threshold for KvikIO IO ([#12841](https://github.com/rapidsai/cudf/pull/12841)) [@madsbk](https://github.com/madsbk)
- Update datasets download URL ([#12840](https://github.com/rapidsai/cudf/pull/12840)) [@jjacobelli](https://github.com/jjacobelli)
- Make docs builds less verbose ([#12836](https://github.com/rapidsai/cudf/pull/12836)) [@AyodeAwe](https://github.com/AyodeAwe)
- Consolidate linter configs into pyproject.toml ([#12834](https://github.com/rapidsai/cudf/pull/12834)) [@vyasr](https://github.com/vyasr)
- Deprecate `names` & `dtype` in `Index.copy` ([#12825](https://github.com/rapidsai/cudf/pull/12825)) [@galipremsagar](https://github.com/galipremsagar)
- Deprecate `inplace` parameters in categorical methods ([#12824](https://github.com/rapidsai/cudf/pull/12824)) [@galipremsagar](https://github.com/galipremsagar)
- Add optional text file support to ninja-log utility ([#12823](https://github.com/rapidsai/cudf/pull/12823)) [@davidwendt](https://github.com/davidwendt)
- Deprecate `Index.is_*` methods ([#12820](https://github.com/rapidsai/cudf/pull/12820)) [@galipremsagar](https://github.com/galipremsagar)
- Add dfg as a pre-commit hook ([#12819](https://github.com/rapidsai/cudf/pull/12819)) [@vyasr](https://github.com/vyasr)
- Deprecate `datetime_is_numeric` from `describe` ([#12818](https://github.com/rapidsai/cudf/pull/12818)) [@galipremsagar](https://github.com/galipremsagar)
- Deprecate `na_sentinel` in `factorize` ([#12817](https://github.com/rapidsai/cudf/pull/12817)) [@galipremsagar](https://github.com/galipremsagar)
- Shuffling read into a sub function in parquet read ([#12809](https://github.com/rapidsai/cudf/pull/12809)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Fixing parquet coalescing of reads ([#12808](https://github.com/rapidsai/cudf/pull/12808)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- CI: Remove specification of manual stage for check_style.sh script. ([#12803](https://github.com/rapidsai/cudf/pull/12803)) [@csadorf](https://github.com/csadorf)
- Add compute-sanitizer github workflow action to nightly tests ([#12800](https://github.com/rapidsai/cudf/pull/12800)) [@davidwendt](https://github.com/davidwendt)
- Enable groupby std and variance aggregation types in libcudf Debug build ([#12799](https://github.com/rapidsai/cudf/pull/12799)) [@davidwendt](https://github.com/davidwendt)
- Expose seed argument to hash_values ([#12795](https://github.com/rapidsai/cudf/pull/12795)) [@ayushdg](https://github.com/ayushdg)
- Fix groupby gtests coded in namespace cudf::test ([#12784](https://github.com/rapidsai/cudf/pull/12784)) [@davidwendt](https://github.com/davidwendt)
- Improve performance for cudf::strings::count_characters for long strings ([#12779](https://github.com/rapidsai/cudf/pull/12779)) [@davidwendt](https://github.com/davidwendt)
- Deallocate encoded data in ORC writer immediately after compression ([#12770](https://github.com/rapidsai/cudf/pull/12770)) [@vuule](https://github.com/vuule)
- Stop force pulling fmt in nvbench. ([#12768](https://github.com/rapidsai/cudf/pull/12768)) [@vyasr](https://github.com/vyasr)
- Remove now redundant cuda initialization ([#12758](https://github.com/rapidsai/cudf/pull/12758)) [@vyasr](https://github.com/vyasr)
- Adds JSON reader, writer io benchmark ([#12753](https://github.com/rapidsai/cudf/pull/12753)) [@karthikeyann](https://github.com/karthikeyann)
- Use test paths relative to package directory. ([#12751](https://github.com/rapidsai/cudf/pull/12751)) [@bdice](https://github.com/bdice)
- Add build metrics report as artifact to cpp-build workflow ([#12750](https://github.com/rapidsai/cudf/pull/12750)) [@davidwendt](https://github.com/davidwendt)
- Add JNI methods for detecting and purging non-empty nulls from LIST and STRUCT ([#12742](https://github.com/rapidsai/cudf/pull/12742)) [@razajafri](https://github.com/razajafri)
- Stop using versioneer to manage versions ([#12741](https://github.com/rapidsai/cudf/pull/12741)) [@vyasr](https://github.com/vyasr)
- Reduce error handling verbosity in CI tests scripts ([#12738](https://github.com/rapidsai/cudf/pull/12738)) [@AjayThorve](https://github.com/AjayThorve)
- Reduce the number of test cases in multibyte_split benchmark ([#12737](https://github.com/rapidsai/cudf/pull/12737)) [@PointKernel](https://github.com/PointKernel)
- Update shared workflow branches ([#12733](https://github.com/rapidsai/cudf/pull/12733)) [@ajschmidt8](https://github.com/ajschmidt8)
- JNI switches to nested JSON reader ([#12732](https://github.com/rapidsai/cudf/pull/12732)) [@res-life](https://github.com/res-life)
- Changing `cudf::io::source_info` to use `cudf::host_span<std::byte>` in a non-breaking form ([#12730](https://github.com/rapidsai/cudf/pull/12730)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Add nvbench environment class for initializing RMM in benchmarks ([#12728](https://github.com/rapidsai/cudf/pull/12728)) [@davidwendt](https://github.com/davidwendt)
- Split C++ and Python build dependencies into separate lists. ([#12724](https://github.com/rapidsai/cudf/pull/12724)) [@bdice](https://github.com/bdice)
- Add build dependencies to Java tests. ([#12723](https://github.com/rapidsai/cudf/pull/12723)) [@bdice](https://github.com/bdice)
- Allow setting the seed argument for hash partition ([#12715](https://github.com/rapidsai/cudf/pull/12715)) [@firestarman](https://github.com/firestarman)
- Remove gpuCI scripts. ([#12712](https://github.com/rapidsai/cudf/pull/12712)) [@bdice](https://github.com/bdice)
- Unpin `dask` and `distributed` for development ([#12710](https://github.com/rapidsai/cudf/pull/12710)) [@galipremsagar](https://github.com/galipremsagar)
- `partition_by_hash()`: use `_split()` ([#12704](https://github.com/rapidsai/cudf/pull/12704)) [@madsbk](https://github.com/madsbk)
- Remove DataFrame.quantiles from docs. ([#12684](https://github.com/rapidsai/cudf/pull/12684)) [@bdice](https://github.com/bdice)
- Fast path for `experimental::row::equality` ([#12676](https://github.com/rapidsai/cudf/pull/12676)) [@divyegala](https://github.com/divyegala)
- Move date to build string in `conda` recipe ([#12661](https://github.com/rapidsai/cudf/pull/12661)) [@ajschmidt8](https://github.com/ajschmidt8)
- Refactor reduction logic for fixed-point types ([#12652](https://github.com/rapidsai/cudf/pull/12652)) [@davidwendt](https://github.com/davidwendt)
- Pay off some JNI RMM API tech debt ([#12632](https://github.com/rapidsai/cudf/pull/12632)) [@revans2](https://github.com/revans2)
- Merge `copy-on-write` feature branch into `branch-23.04` ([#12619](https://github.com/rapidsai/cudf/pull/12619)) [@galipremsagar](https://github.com/galipremsagar)
- Remove cudf::strings::repeat_strings_output_sizes and optional parameter from cudf::strings::repeat_strings ([#12609](https://github.com/rapidsai/cudf/pull/12609)) [@davidwendt](https://github.com/davidwendt)
- Pin cuda-nvrtc. ([#12606](https://github.com/rapidsai/cudf/pull/12606)) [@bdice](https://github.com/bdice)
- Remove cudf::test::print calls from libcudf gtests ([#12604](https://github.com/rapidsai/cudf/pull/12604)) [@davidwendt](https://github.com/davidwendt)
- Init JNI version 23.04.0-SNAPSHOT ([#12599](https://github.com/rapidsai/cudf/pull/12599)) [@pxLi](https://github.com/pxLi)
- Add performance benchmarks to user facing docs ([#12595](https://github.com/rapidsai/cudf/pull/12595)) [@galipremsagar](https://github.com/galipremsagar)
- Add docs build job ([#12592](https://github.com/rapidsai/cudf/pull/12592)) [@AyodeAwe](https://github.com/AyodeAwe)
- Replace message parsing with throwing more specific exceptions ([#12426](https://github.com/rapidsai/cudf/pull/12426)) [@vyasr](https://github.com/vyasr)
- Support conversion to/from cudf in dask.dataframe.core.to_backend ([#12380](https://github.com/rapidsai/cudf/pull/12380)) [@rjzamora](https://github.com/rjzamora)
# cuDF 23.02.00 (9 Feb 2023)
## 🚨 Breaking Changes
- Pin `dask` and `distributed` for release ([#12695](https://github.com/rapidsai/cudf/pull/12695)) [@galipremsagar](https://github.com/galipremsagar)
- Change ways to access `ptr` in `Buffer` ([#12587](https://github.com/rapidsai/cudf/pull/12587)) [@galipremsagar](https://github.com/galipremsagar)
- Remove column names ([#12578](https://github.com/rapidsai/cudf/pull/12578)) [@vuule](https://github.com/vuule)
- Default `cudf::io::read_json` to nested JSON parser ([#12544](https://github.com/rapidsai/cudf/pull/12544)) [@vuule](https://github.com/vuule)
- Switch `engine=cudf` to the new `JSON` reader ([#12509](https://github.com/rapidsai/cudf/pull/12509)) [@galipremsagar](https://github.com/galipremsagar)
- Add trailing comma support for nested JSON reader ([#12448](https://github.com/rapidsai/cudf/pull/12448)) [@karthikeyann](https://github.com/karthikeyann)
- Upgrade to `arrow-10.0.1` ([#12327](https://github.com/rapidsai/cudf/pull/12327)) [@galipremsagar](https://github.com/galipremsagar)
- Fail loudly to avoid data corruption with unsupported input in `read_orc` ([#12325](https://github.com/rapidsai/cudf/pull/12325)) [@vuule](https://github.com/vuule)
- CSV, JSON reader to infer integer column with nulls as int64 instead of float64 ([#12309](https://github.com/rapidsai/cudf/pull/12309)) [@karthikeyann](https://github.com/karthikeyann)
- Remove deprecated code for 23.02 ([#12281](https://github.com/rapidsai/cudf/pull/12281)) [@vyasr](https://github.com/vyasr)
- Null element for parsing error in numeric types in JSON, CSV reader ([#12272](https://github.com/rapidsai/cudf/pull/12272)) [@karthikeyann](https://github.com/karthikeyann)
- Purge non-empty nulls for `superimpose_nulls` and `push_down_nulls` ([#12239](https://github.com/rapidsai/cudf/pull/12239)) [@ttnghia](https://github.com/ttnghia)
- Rename `cudf::structs::detail::superimpose_parent_nulls` APIs ([#12230](https://github.com/rapidsai/cudf/pull/12230)) [@ttnghia](https://github.com/ttnghia)
- Remove JIT type names, refactor id_to_type. ([#12158](https://github.com/rapidsai/cudf/pull/12158)) [@bdice](https://github.com/bdice)
- Floor division uses integer division for integral arguments ([#12131](https://github.com/rapidsai/cudf/pull/12131)) [@wence-](https://github.com/wence-)
## 🐛 Bug Fixes
- Fix a mask data corruption in UDF ([#12647](https://github.com/rapidsai/cudf/pull/12647)) [@galipremsagar](https://github.com/galipremsagar)
- pre-commit: Update isort version to 5.12.0 ([#12645](https://github.com/rapidsai/cudf/pull/12645)) [@wence-](https://github.com/wence-)
- tests: Skip cuInit tests if cuda-gdb is not found or not working ([#12644](https://github.com/rapidsai/cudf/pull/12644)) [@wence-](https://github.com/wence-)
- Revert regex program java APIs and tests ([#12639](https://github.com/rapidsai/cudf/pull/12639)) [@cindyyuanjiang](https://github.com/cindyyuanjiang)
- Fix leaks in ColumnVectorTest ([#12625](https://github.com/rapidsai/cudf/pull/12625)) [@jlowe](https://github.com/jlowe)
- Handle when spillable buffers own each other ([#12607](https://github.com/rapidsai/cudf/pull/12607)) [@madsbk](https://github.com/madsbk)
- Fix incorrect null counts for sliced columns in JCudfSerialization ([#12589](https://github.com/rapidsai/cudf/pull/12589)) [@jlowe](https://github.com/jlowe)
- lists: Transfer dtypes correctly through list.get ([#12586](https://github.com/rapidsai/cudf/pull/12586)) [@wence-](https://github.com/wence-)
- timedelta: Don't go via float intermediates for floordiv ([#12585](https://github.com/rapidsai/cudf/pull/12585)) [@wence-](https://github.com/wence-)
- Fixing BUG, `get_next_chunk()` should use the blocking function `device_read()` ([#12584](https://github.com/rapidsai/cudf/pull/12584)) [@madsbk](https://github.com/madsbk)
- Make JNI QuoteStyle accessible outside ai.rapids.cudf ([#12572](https://github.com/rapidsai/cudf/pull/12572)) [@mythrocks](https://github.com/mythrocks)
- `partition_by_hash()`: support index ([#12554](https://github.com/rapidsai/cudf/pull/12554)) [@madsbk](https://github.com/madsbk)
- Mixed Join benchmark bug due to wrong conditional column ([#12553](https://github.com/rapidsai/cudf/pull/12553)) [@divyegala](https://github.com/divyegala)
- Update List Lexicographical Comparator ([#12538](https://github.com/rapidsai/cudf/pull/12538)) [@divyegala](https://github.com/divyegala)
- Dynamically read PTX version ([#12534](https://github.com/rapidsai/cudf/pull/12534)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- build.sh switch to use `RAPIDS` magic value ([#12525](https://github.com/rapidsai/cudf/pull/12525)) [@robertmaynard](https://github.com/robertmaynard)
- Loosen runtime arrow pinning ([#12522](https://github.com/rapidsai/cudf/pull/12522)) [@vyasr](https://github.com/vyasr)
- Enable metadata transfer for complex types in transpose ([#12491](https://github.com/rapidsai/cudf/pull/12491)) [@galipremsagar](https://github.com/galipremsagar)
- Fix issues with parquet chunked reader ([#12488](https://github.com/rapidsai/cudf/pull/12488)) [@nvdbaranec](https://github.com/nvdbaranec)
- Fix missing metadata transfer in concat for `ListColumn` ([#12487](https://github.com/rapidsai/cudf/pull/12487)) [@galipremsagar](https://github.com/galipremsagar)
- Rename libcudf substring source files to slice ([#12484](https://github.com/rapidsai/cudf/pull/12484)) [@davidwendt](https://github.com/davidwendt)
- Fix compile issue with arrow 10 ([#12465](https://github.com/rapidsai/cudf/pull/12465)) [@ttnghia](https://github.com/ttnghia)
- Fix List offsets bug in mixed type list column in nested JSON reader ([#12447](https://github.com/rapidsai/cudf/pull/12447)) [@karthikeyann](https://github.com/karthikeyann)
- Fix xfail incompatibilities ([#12423](https://github.com/rapidsai/cudf/pull/12423)) [@vyasr](https://github.com/vyasr)
- Fix bug in Parquet column index encoding ([#12404](https://github.com/rapidsai/cudf/pull/12404)) [@etseidl](https://github.com/etseidl)
- When building Arrow shared look for a shared OpenSSL ([#12396](https://github.com/rapidsai/cudf/pull/12396)) [@robertmaynard](https://github.com/robertmaynard)
- Fix get_json_object to return empty column on empty input ([#12384](https://github.com/rapidsai/cudf/pull/12384)) [@davidwendt](https://github.com/davidwendt)
- Pin arrow 9 in testing dependencies to prevent conda solve issues ([#12377](https://github.com/rapidsai/cudf/pull/12377)) [@vyasr](https://github.com/vyasr)
- Fix reductions any/all return value for empty input ([#12374](https://github.com/rapidsai/cudf/pull/12374)) [@davidwendt](https://github.com/davidwendt)
- Fix debug compile errors in parquet.hpp ([#12372](https://github.com/rapidsai/cudf/pull/12372)) [@davidwendt](https://github.com/davidwendt)
- Purge non-empty nulls in `cudf::make_lists_column` ([#12370](https://github.com/rapidsai/cudf/pull/12370)) [@ttnghia](https://github.com/ttnghia)
- Use correct memory resource in io::make_column ([#12364](https://github.com/rapidsai/cudf/pull/12364)) [@vyasr](https://github.com/vyasr)
- Add code to detect possible malformed page data in parquet files. ([#12360](https://github.com/rapidsai/cudf/pull/12360)) [@nvdbaranec](https://github.com/nvdbaranec)
- Fail loudly to avoid data corruption with unsupported input in `read_orc` ([#12325](https://github.com/rapidsai/cudf/pull/12325)) [@vuule](https://github.com/vuule)
- Fix NumericPairIteratorTest for float values ([#12306](https://github.com/rapidsai/cudf/pull/12306)) [@davidwendt](https://github.com/davidwendt)
- Fixes memory allocation in nested JSON tokenizer ([#12300](https://github.com/rapidsai/cudf/pull/12300)) [@elstehle](https://github.com/elstehle)
- Reconstruct dtypes correctly for list aggs of struct columns ([#12290](https://github.com/rapidsai/cudf/pull/12290)) [@wence-](https://github.com/wence-)
- Fix regex \A and \Z to strictly match string begin/end ([#12282](https://github.com/rapidsai/cudf/pull/12282)) [@davidwendt](https://github.com/davidwendt)
- Fix compile issue in `json_chunked_reader.cpp` ([#12280](https://github.com/rapidsai/cudf/pull/12280)) [@ttnghia](https://github.com/ttnghia)
- Change reductions any/all to return valid values for empty input ([#12279](https://github.com/rapidsai/cudf/pull/12279)) [@davidwendt](https://github.com/davidwendt)
- Only exclude join keys that are indices from key columns ([#12271](https://github.com/rapidsai/cudf/pull/12271)) [@wence-](https://github.com/wence-)
- Fix spill to device limit ([#12252](https://github.com/rapidsai/cudf/pull/12252)) [@madsbk](https://github.com/madsbk)
- Correct behaviour of sort in `concat` for singleton concatenations ([#12247](https://github.com/rapidsai/cudf/pull/12247)) [@wence-](https://github.com/wence-)
- Purge non-empty nulls for `superimpose_nulls` and `push_down_nulls` ([#12239](https://github.com/rapidsai/cudf/pull/12239)) [@ttnghia](https://github.com/ttnghia)
- Patch CUB DeviceSegmentedSort and remove workaround ([#12234](https://github.com/rapidsai/cudf/pull/12234)) [@davidwendt](https://github.com/davidwendt)
- Fix memory leak in udf_string::assign(&&) function ([#12206](https://github.com/rapidsai/cudf/pull/12206)) [@davidwendt](https://github.com/davidwendt)
- Workaround thrust-copy-if limit in json get_tree_representation ([#12190](https://github.com/rapidsai/cudf/pull/12190)) [@davidwendt](https://github.com/davidwendt)
- Fix page size calculation in Parquet writer ([#12182](https://github.com/rapidsai/cudf/pull/12182)) [@etseidl](https://github.com/etseidl)
- Add cudf::detail::sizes_to_offsets_iterator to allow checking overflow in offsets ([#12180](https://github.com/rapidsai/cudf/pull/12180)) [@davidwendt](https://github.com/davidwendt)
- Workaround thrust-copy-if limit in wordpiece-tokenizer ([#12168](https://github.com/rapidsai/cudf/pull/12168)) [@davidwendt](https://github.com/davidwendt)
- Floor division uses integer division for integral arguments ([#12131](https://github.com/rapidsai/cudf/pull/12131)) [@wence-](https://github.com/wence-)
## 📖 Documentation
- Fix link to NVTX ([#12598](https://github.com/rapidsai/cudf/pull/12598)) [@sameerz](https://github.com/sameerz)
- Include missing groupby functions in documentation ([#12580](https://github.com/rapidsai/cudf/pull/12580)) [@quasiben](https://github.com/quasiben)
- Fix documentation author ([#12527](https://github.com/rapidsai/cudf/pull/12527)) [@bdice](https://github.com/bdice)
- Update libcudf reduction docs for casting output types ([#12526](https://github.com/rapidsai/cudf/pull/12526)) [@davidwendt](https://github.com/davidwendt)
- Add JSON reader page in user guide ([#12499](https://github.com/rapidsai/cudf/pull/12499)) [@GregoryKimball](https://github.com/GregoryKimball)
- Link unsupported iteration API docstrings ([#12482](https://github.com/rapidsai/cudf/pull/12482)) [@galipremsagar](https://github.com/galipremsagar)
- `strings_udf` doc update ([#12469](https://github.com/rapidsai/cudf/pull/12469)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Update cudf_assert docs with correct NDEBUG behavior ([#12464](https://github.com/rapidsai/cudf/pull/12464)) [@robertmaynard](https://github.com/robertmaynard)
- Update pre-commit hooks guide ([#12395](https://github.com/rapidsai/cudf/pull/12395)) [@bdice](https://github.com/bdice)
- Update test docs to not use detail comparison utilities ([#12332](https://github.com/rapidsai/cudf/pull/12332)) [@PointKernel](https://github.com/PointKernel)
- Fix doxygen description for regex_program::compute_working_memory_size ([#12329](https://github.com/rapidsai/cudf/pull/12329)) [@davidwendt](https://github.com/davidwendt)
- Add eval to docs. ([#12322](https://github.com/rapidsai/cudf/pull/12322)) [@vyasr](https://github.com/vyasr)
- Turn on xfail_strict=true ([#12244](https://github.com/rapidsai/cudf/pull/12244)) [@wence-](https://github.com/wence-)
- Update 10 minutes to cuDF ([#12114](https://github.com/rapidsai/cudf/pull/12114)) [@wence-](https://github.com/wence-)
## 🚀 New Features
- Use kvikIO as the default IO backend ([#12574](https://github.com/rapidsai/cudf/pull/12574)) [@vuule](https://github.com/vuule)
- Use `has_nonempty_nulls` instead of `may_contain_non_empty_nulls` in `superimpose_nulls` and `push_down_nulls` ([#12560](https://github.com/rapidsai/cudf/pull/12560)) [@ttnghia](https://github.com/ttnghia)
- Add strings methods removeprefix and removesuffix ([#12557](https://github.com/rapidsai/cudf/pull/12557)) [@davidwendt](https://github.com/davidwendt)
- Add `regex_program` java APIs and unit tests ([#12548](https://github.com/rapidsai/cudf/pull/12548)) [@cindyyuanjiang](https://github.com/cindyyuanjiang)
- Default `cudf::io::read_json` to nested JSON parser ([#12544](https://github.com/rapidsai/cudf/pull/12544)) [@vuule](https://github.com/vuule)
- Make string quoting optional on CSV write ([#12539](https://github.com/rapidsai/cudf/pull/12539)) [@mythrocks](https://github.com/mythrocks)
- Use new nvCOMP API to optimize the compression temp memory size ([#12533](https://github.com/rapidsai/cudf/pull/12533)) [@vuule](https://github.com/vuule)
- Support "values" orient (array of arrays) in Nested JSON reader ([#12498](https://github.com/rapidsai/cudf/pull/12498)) [@karthikeyann](https://github.com/karthikeyann)
- `one_hot_encode` to use experimental row comparators ([#12478](https://github.com/rapidsai/cudf/pull/12478)) [@divyegala](https://github.com/divyegala)
- Support %W and %w format specifiers in cudf::strings::to_timestamps ([#12475](https://github.com/rapidsai/cudf/pull/12475)) [@davidwendt](https://github.com/davidwendt)
- Add JSON Writer ([#12474](https://github.com/rapidsai/cudf/pull/12474)) [@karthikeyann](https://github.com/karthikeyann)
- Refactor `thrust_copy_if` into `cudf::detail::copy_if_safe` ([#12455](https://github.com/rapidsai/cudf/pull/12455)) [@ttnghia](https://github.com/ttnghia)
- Add trailing comma support for nested JSON reader ([#12448](https://github.com/rapidsai/cudf/pull/12448)) [@karthikeyann](https://github.com/karthikeyann)
- Extract `tokenize_json.hpp` detail header from `src/io/json/nested_json.hpp` ([#12432](https://github.com/rapidsai/cudf/pull/12432)) [@ttnghia](https://github.com/ttnghia)
- JNI bindings to write CSV ([#12425](https://github.com/rapidsai/cudf/pull/12425)) [@mythrocks](https://github.com/mythrocks)
- Nested JSON depth benchmark ([#12371](https://github.com/rapidsai/cudf/pull/12371)) [@karthikeyann](https://github.com/karthikeyann)
- Implement `lists::reverse` ([#12336](https://github.com/rapidsai/cudf/pull/12336)) [@ttnghia](https://github.com/ttnghia)
- Use `device_read` in experimental `read_json` ([#12314](https://github.com/rapidsai/cudf/pull/12314)) [@vuule](https://github.com/vuule)
- Implement JNI for `strings::reverse` ([#12283](https://github.com/rapidsai/cudf/pull/12283)) [@ttnghia](https://github.com/ttnghia)
- Null element for parsing error in numeric types in JSON, CSV reader ([#12272](https://github.com/rapidsai/cudf/pull/12272)) [@karthikeyann](https://github.com/karthikeyann)
- Add cudf::strings:like function with multiple patterns ([#12269](https://github.com/rapidsai/cudf/pull/12269)) [@davidwendt](https://github.com/davidwendt)
- Add environment variable to control host memory allocation in `hostdevice_vector` ([#12251](https://github.com/rapidsai/cudf/pull/12251)) [@vuule](https://github.com/vuule)
- Add cudf::strings::reverse function ([#12227](https://github.com/rapidsai/cudf/pull/12227)) [@davidwendt](https://github.com/davidwendt)
- Selectively use dictionary encoding in Parquet writer ([#12211](https://github.com/rapidsai/cudf/pull/12211)) [@etseidl](https://github.com/etseidl)
- Support `replace` in `strings_udf` ([#12207](https://github.com/rapidsai/cudf/pull/12207)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Add support to read binary encoded decimals in parquet ([#12205](https://github.com/rapidsai/cudf/pull/12205)) [@PointKernel](https://github.com/PointKernel)
- Support regex EOL where the string ends with a new-line character ([#12181](https://github.com/rapidsai/cudf/pull/12181)) [@davidwendt](https://github.com/davidwendt)
- Updating `stream_compaction/unique` to use new row comparators ([#12159](https://github.com/rapidsai/cudf/pull/12159)) [@divyegala](https://github.com/divyegala)
- Add device buffer datasource ([#12024](https://github.com/rapidsai/cudf/pull/12024)) [@PointKernel](https://github.com/PointKernel)
- Implement groupby apply with JIT ([#11452](https://github.com/rapidsai/cudf/pull/11452)) [@bwyogatama](https://github.com/bwyogatama)
## 🛠️ Improvements
- Update shared workflow branches ([#12696](https://github.com/rapidsai/cudf/pull/12696)) [@ajschmidt8](https://github.com/ajschmidt8)
- Pin `dask` and `distributed` for release ([#12695](https://github.com/rapidsai/cudf/pull/12695)) [@galipremsagar](https://github.com/galipremsagar)
- Don't upload `libcudf-example` to Anaconda.org ([#12671](https://github.com/rapidsai/cudf/pull/12671)) [@ajschmidt8](https://github.com/ajschmidt8)
- Pin wheel dependencies to same RAPIDS release ([#12659](https://github.com/rapidsai/cudf/pull/12659)) [@sevagh](https://github.com/sevagh)
- Use CTK 118/cp310 branch of wheel workflows ([#12602](https://github.com/rapidsai/cudf/pull/12602)) [@sevagh](https://github.com/sevagh)
- Change ways to access `ptr` in `Buffer` ([#12587](https://github.com/rapidsai/cudf/pull/12587)) [@galipremsagar](https://github.com/galipremsagar)
- Version a parquet writer xfail ([#12579](https://github.com/rapidsai/cudf/pull/12579)) [@galipremsagar](https://github.com/galipremsagar)
- Remove column names ([#12578](https://github.com/rapidsai/cudf/pull/12578)) [@vuule](https://github.com/vuule)
- Parquet reader optimization to address V100 regression. ([#12577](https://github.com/rapidsai/cudf/pull/12577)) [@nvdbaranec](https://github.com/nvdbaranec)
- Add support for `category` dtypes in CSV reader ([#12571](https://github.com/rapidsai/cudf/pull/12571)) [@galipremsagar](https://github.com/galipremsagar)
- Remove `spill_lock` parameter from `SpillableBuffer.get_ptr()` ([#12564](https://github.com/rapidsai/cudf/pull/12564)) [@madsbk](https://github.com/madsbk)
- Optimize `cudf::make_lists_column` ([#12547](https://github.com/rapidsai/cudf/pull/12547)) [@ttnghia](https://github.com/ttnghia)
- Remove `cudf::strings::repeat_strings_output_sizes` from Java and JNI ([#12546](https://github.com/rapidsai/cudf/pull/12546)) [@ttnghia](https://github.com/ttnghia)
- Test that cuInit is not called when RAPIDS_NO_INITIALIZE is set ([#12545](https://github.com/rapidsai/cudf/pull/12545)) [@wence-](https://github.com/wence-)
- Rework repeat_strings to use sizes-to-offsets utility ([#12543](https://github.com/rapidsai/cudf/pull/12543)) [@davidwendt](https://github.com/davidwendt)
- Replace exclusive_scan with sizes_to_offsets in cudf::lists::sequences ([#12541](https://github.com/rapidsai/cudf/pull/12541)) [@davidwendt](https://github.com/davidwendt)
- Rework nvtext::ngrams_tokenize to use sizes-to-offsets utility ([#12540](https://github.com/rapidsai/cudf/pull/12540)) [@davidwendt](https://github.com/davidwendt)
- Fix binary-ops gtests coded in namespace cudf::test ([#12536](https://github.com/rapidsai/cudf/pull/12536)) [@davidwendt](https://github.com/davidwendt)
- More `[@acquire_spill_lock()` and `as_buffer(..., exposed=False)` ([#12535](https://github.com/rapidsai/cudf/pull/12535)) @madsbk](https://github.com/acquire_spill_lock()` and `as_buffer(..., exposed=False)` ([#12535](https://github.com/rapidsai/cudf/pull/12535)) @madsbk)
- Guard CUDA runtime APIs with error checking ([#12531](https://github.com/rapidsai/cudf/pull/12531)) [@PointKernel](https://github.com/PointKernel)
- Update TODOs from issue 10432. ([#12528](https://github.com/rapidsai/cudf/pull/12528)) [@bdice](https://github.com/bdice)
- Update rapids-cmake definitions version in GitHub Actions style checks. ([#12511](https://github.com/rapidsai/cudf/pull/12511)) [@bdice](https://github.com/bdice)
- Switch `engine=cudf` to the new `JSON` reader ([#12509](https://github.com/rapidsai/cudf/pull/12509)) [@galipremsagar](https://github.com/galipremsagar)
- Fix SUM/MEAN aggregation type support. ([#12503](https://github.com/rapidsai/cudf/pull/12503)) [@bdice](https://github.com/bdice)
- Stop using pandas._testing ([#12492](https://github.com/rapidsai/cudf/pull/12492)) [@vyasr](https://github.com/vyasr)
- Fix ROLLING_TEST gtests coded in namespace cudf::test ([#12490](https://github.com/rapidsai/cudf/pull/12490)) [@davidwendt](https://github.com/davidwendt)
- Fix erroneously skipped ORC ZSTD test ([#12486](https://github.com/rapidsai/cudf/pull/12486)) [@vuule](https://github.com/vuule)
- Rework nvtext::generate_character_ngrams to use make_strings_children ([#12480](https://github.com/rapidsai/cudf/pull/12480)) [@davidwendt](https://github.com/davidwendt)
- Raise warnings as errors in the test suite ([#12468](https://github.com/rapidsai/cudf/pull/12468)) [@vyasr](https://github.com/vyasr)
- Remove `int32` hard-coding in python ([#12467](https://github.com/rapidsai/cudf/pull/12467)) [@galipremsagar](https://github.com/galipremsagar)
- Use cudaMemcpyDefault. ([#12466](https://github.com/rapidsai/cudf/pull/12466)) [@bdice](https://github.com/bdice)
- Update workflows for nightly tests ([#12462](https://github.com/rapidsai/cudf/pull/12462)) [@ajschmidt8](https://github.com/ajschmidt8)
- Build CUDA `11.8` and Python `3.10` Packages ([#12457](https://github.com/rapidsai/cudf/pull/12457)) [@ajschmidt8](https://github.com/ajschmidt8)
- JNI build image default as cuda11.8 ([#12441](https://github.com/rapidsai/cudf/pull/12441)) [@pxLi](https://github.com/pxLi)
- Re-enable `Recently Updated` Check ([#12435](https://github.com/rapidsai/cudf/pull/12435)) [@ajschmidt8](https://github.com/ajschmidt8)
- Rework remaining cudf::strings::from_xyz functions to use make_strings_children ([#12434](https://github.com/rapidsai/cudf/pull/12434)) [@vuule](https://github.com/vuule)
- Build wheels alongside conda CI ([#12427](https://github.com/rapidsai/cudf/pull/12427)) [@sevagh](https://github.com/sevagh)
- Remove arguments for checking exception messages in Python ([#12424](https://github.com/rapidsai/cudf/pull/12424)) [@vyasr](https://github.com/vyasr)
- Clean up cuco usage ([#12421](https://github.com/rapidsai/cudf/pull/12421)) [@PointKernel](https://github.com/PointKernel)
- Fix warnings in remaining modules ([#12406](https://github.com/rapidsai/cudf/pull/12406)) [@vyasr](https://github.com/vyasr)
- Update `ops-bot.yaml` ([#12402](https://github.com/rapidsai/cudf/pull/12402)) [@ajschmidt8](https://github.com/ajschmidt8)
- Rework cudf::strings::integers_to_ipv4 to use make_strings_children utility ([#12401](https://github.com/rapidsai/cudf/pull/12401)) [@davidwendt](https://github.com/davidwendt)
- Use `numpy.empty()` instead of `bytearray` to allocate host memory for spilling ([#12399](https://github.com/rapidsai/cudf/pull/12399)) [@madsbk](https://github.com/madsbk)
- Deprecate chunksize from dask_cudf.read_csv ([#12394](https://github.com/rapidsai/cudf/pull/12394)) [@rjzamora](https://github.com/rjzamora)
- Expose the RMM pool size in JNI ([#12390](https://github.com/rapidsai/cudf/pull/12390)) [@revans2](https://github.com/revans2)
- Fix COPYING_TEST: gtests coded in namespace cudf::test ([#12387](https://github.com/rapidsai/cudf/pull/12387)) [@davidwendt](https://github.com/davidwendt)
- Rework cudf::strings::url_encode to use make_strings_children utility ([#12385](https://github.com/rapidsai/cudf/pull/12385)) [@davidwendt](https://github.com/davidwendt)
- Use make_strings_children in parse_data nested json reader ([#12382](https://github.com/rapidsai/cudf/pull/12382)) [@karthikeyann](https://github.com/karthikeyann)
- Fix warnings in test_datetime.py ([#12381](https://github.com/rapidsai/cudf/pull/12381)) [@vyasr](https://github.com/vyasr)
- Mixed Join Benchmarks ([#12375](https://github.com/rapidsai/cudf/pull/12375)) [@divyegala](https://github.com/divyegala)
- Fix warnings in dataframe.py ([#12369](https://github.com/rapidsai/cudf/pull/12369)) [@vyasr](https://github.com/vyasr)
- Update conda recipes. ([#12368](https://github.com/rapidsai/cudf/pull/12368)) [@bdice](https://github.com/bdice)
- Use gpu-latest-1 runner tag ([#12366](https://github.com/rapidsai/cudf/pull/12366)) [@bdice](https://github.com/bdice)
- Rework cudf::strings::from_booleans to use make_strings_children ([#12365](https://github.com/rapidsai/cudf/pull/12365)) [@vuule](https://github.com/vuule)
- Fix warnings in test modules up to test_dataframe.py ([#12355](https://github.com/rapidsai/cudf/pull/12355)) [@vyasr](https://github.com/vyasr)
- JSON column performance optimization - struct column nulls ([#12354](https://github.com/rapidsai/cudf/pull/12354)) [@karthikeyann](https://github.com/karthikeyann)
- Accelerate stable-segmented-sort with CUB segmented sort ([#12347](https://github.com/rapidsai/cudf/pull/12347)) [@davidwendt](https://github.com/davidwendt)
- Add size check to make_offsets_child_column utility ([#12345](https://github.com/rapidsai/cudf/pull/12345)) [@davidwendt](https://github.com/davidwendt)
- Enable max compression ratio small block optimization for ZSTD ([#12338](https://github.com/rapidsai/cudf/pull/12338)) [@vuule](https://github.com/vuule)
- Fix warnings in test_monotonic.py ([#12334](https://github.com/rapidsai/cudf/pull/12334)) [@vyasr](https://github.com/vyasr)
- Improve JSON column creation performance (list offsets) ([#12330](https://github.com/rapidsai/cudf/pull/12330)) [@karthikeyann](https://github.com/karthikeyann)
- Upgrade to `arrow-10.0.1` ([#12327](https://github.com/rapidsai/cudf/pull/12327)) [@galipremsagar](https://github.com/galipremsagar)
- Fix warnings in test_orc.py ([#12326](https://github.com/rapidsai/cudf/pull/12326)) [@vyasr](https://github.com/vyasr)
- Fix warnings in test_groupby.py ([#12324](https://github.com/rapidsai/cudf/pull/12324)) [@vyasr](https://github.com/vyasr)
- Fix `test_notebooks.sh` ([#12323](https://github.com/rapidsai/cudf/pull/12323)) [@ajschmidt8](https://github.com/ajschmidt8)
- Fix transform gtests coded in namespace cudf::test ([#12321](https://github.com/rapidsai/cudf/pull/12321)) [@davidwendt](https://github.com/davidwendt)
- Fix `check_style.sh` script ([#12320](https://github.com/rapidsai/cudf/pull/12320)) [@ajschmidt8](https://github.com/ajschmidt8)
- Rework cudf::strings::from_timestamps to use make_strings_children ([#12317](https://github.com/rapidsai/cudf/pull/12317)) [@davidwendt](https://github.com/davidwendt)
- Fix warnings in test_index.py ([#12313](https://github.com/rapidsai/cudf/pull/12313)) [@vyasr](https://github.com/vyasr)
- Fix warnings in test_multiindex.py ([#12310](https://github.com/rapidsai/cudf/pull/12310)) [@vyasr](https://github.com/vyasr)
- CSV, JSON reader to infer integer column with nulls as int64 instead of float64 ([#12309](https://github.com/rapidsai/cudf/pull/12309)) [@karthikeyann](https://github.com/karthikeyann)
- Fix warnings in test_indexing.py ([#12305](https://github.com/rapidsai/cudf/pull/12305)) [@vyasr](https://github.com/vyasr)
- Fix warnings in test_joining.py ([#12304](https://github.com/rapidsai/cudf/pull/12304)) [@vyasr](https://github.com/vyasr)
- Unpin `dask` and `distributed` for development ([#12302](https://github.com/rapidsai/cudf/pull/12302)) [@galipremsagar](https://github.com/galipremsagar)
- Re-enable `sccache` for Jenkins builds ([#12297](https://github.com/rapidsai/cudf/pull/12297)) [@ajschmidt8](https://github.com/ajschmidt8)
- Define needs for pr-builder workflow. ([#12296](https://github.com/rapidsai/cudf/pull/12296)) [@bdice](https://github.com/bdice)
- Forward merge 22.12 into 23.02 ([#12294](https://github.com/rapidsai/cudf/pull/12294)) [@vyasr](https://github.com/vyasr)
- Fix warnings in test_stats.py ([#12293](https://github.com/rapidsai/cudf/pull/12293)) [@vyasr](https://github.com/vyasr)
- Fix table gtests coded in namespace cudf::test ([#12292](https://github.com/rapidsai/cudf/pull/12292)) [@davidwendt](https://github.com/davidwendt)
- Change cython for regex calls to use cudf::strings::regex_program ([#12289](https://github.com/rapidsai/cudf/pull/12289)) [@davidwendt](https://github.com/davidwendt)
- Improved error reporting when reading multiple JSON files ([#12285](https://github.com/rapidsai/cudf/pull/12285)) [@vuule](https://github.com/vuule)
- Deprecate Frame.sum_of_squares ([#12284](https://github.com/rapidsai/cudf/pull/12284)) [@vyasr](https://github.com/vyasr)
- Remove deprecated code for 23.02 ([#12281](https://github.com/rapidsai/cudf/pull/12281)) [@vyasr](https://github.com/vyasr)
- Clean up handling of max_page_size_bytes in Parquet writer ([#12277](https://github.com/rapidsai/cudf/pull/12277)) [@etseidl](https://github.com/etseidl)
- Fix replace gtests coded in namespace cudf::test ([#12270](https://github.com/rapidsai/cudf/pull/12270)) [@davidwendt](https://github.com/davidwendt)
- Add pandas nullable type support in `Index.to_pandas` ([#12268](https://github.com/rapidsai/cudf/pull/12268)) [@galipremsagar](https://github.com/galipremsagar)
- Rework nvtext::detokenize to use indexalator for row indices ([#12267](https://github.com/rapidsai/cudf/pull/12267)) [@davidwendt](https://github.com/davidwendt)
- Fix reduction gtests coded in namespace cudf::test ([#12257](https://github.com/rapidsai/cudf/pull/12257)) [@davidwendt](https://github.com/davidwendt)
- Remove default parameters from cudf::detail::sort function declarations ([#12254](https://github.com/rapidsai/cudf/pull/12254)) [@davidwendt](https://github.com/davidwendt)
- Add `duplicated` support for `Series`, `DataFrame` and `Index` ([#12246](https://github.com/rapidsai/cudf/pull/12246)) [@galipremsagar](https://github.com/galipremsagar)
- Replace column/table test utilities with macros ([#12242](https://github.com/rapidsai/cudf/pull/12242)) [@PointKernel](https://github.com/PointKernel)
- Rework cudf::strings::pad and zfill to use make_strings_children ([#12238](https://github.com/rapidsai/cudf/pull/12238)) [@davidwendt](https://github.com/davidwendt)
- Fix sort gtests coded in namespace cudf::test ([#12237](https://github.com/rapidsai/cudf/pull/12237)) [@davidwendt](https://github.com/davidwendt)
- Wrapping concat and file writes in `[@acquire_spill_lock()` ([#12232](https://github.com/rapidsai/cudf/pull/12232)) @madsbk](https://github.com/acquire_spill_lock()` ([#12232](https://github.com/rapidsai/cudf/pull/12232)) @madsbk)
- Rename `cudf::structs::detail::superimpose_parent_nulls` APIs ([#12230](https://github.com/rapidsai/cudf/pull/12230)) [@ttnghia](https://github.com/ttnghia)
- Cover parsing to decimal types in `read_json` tests ([#12229](https://github.com/rapidsai/cudf/pull/12229)) [@vuule](https://github.com/vuule)
- Spill Statistics ([#12223](https://github.com/rapidsai/cudf/pull/12223)) [@madsbk](https://github.com/madsbk)
- Use CUDF_JNI_ENABLE_PROFILING to conditionally enable profiling support. ([#12221](https://github.com/rapidsai/cudf/pull/12221)) [@bdice](https://github.com/bdice)
- Clean up of `test_spilling.py` ([#12220](https://github.com/rapidsai/cudf/pull/12220)) [@madsbk](https://github.com/madsbk)
- Simplify repetitive boolean logic ([#12218](https://github.com/rapidsai/cudf/pull/12218)) [@vuule](https://github.com/vuule)
- Add `Series.hasnans` and `Index.hasnans` ([#12214](https://github.com/rapidsai/cudf/pull/12214)) [@galipremsagar](https://github.com/galipremsagar)
- Add cudf::strings:udf::replace function ([#12210](https://github.com/rapidsai/cudf/pull/12210)) [@davidwendt](https://github.com/davidwendt)
- Adds in new java APIs for appending byte arrays to host columnar data ([#12208](https://github.com/rapidsai/cudf/pull/12208)) [@revans2](https://github.com/revans2)
- Remove Python dependencies from Java CI. ([#12193](https://github.com/rapidsai/cudf/pull/12193)) [@bdice](https://github.com/bdice)
- Fix null order in sort-based groupby and improve groupby tests ([#12191](https://github.com/rapidsai/cudf/pull/12191)) [@divyegala](https://github.com/divyegala)
- Move strings children functions from cudf/strings/detail/utilities.cuh to new header ([#12185](https://github.com/rapidsai/cudf/pull/12185)) [@davidwendt](https://github.com/davidwendt)
- Clean up existing JNI scalar to column code ([#12173](https://github.com/rapidsai/cudf/pull/12173)) [@revans2](https://github.com/revans2)
- Remove JIT type names, refactor id_to_type. ([#12158](https://github.com/rapidsai/cudf/pull/12158)) [@bdice](https://github.com/bdice)
- Update JNI version to 23.02.0-SNAPSHOT ([#12129](https://github.com/rapidsai/cudf/pull/12129)) [@pxLi](https://github.com/pxLi)
- Minor refactor of cpp/src/io/parquet/page_data.cu ([#12126](https://github.com/rapidsai/cudf/pull/12126)) [@etseidl](https://github.com/etseidl)
- Add codespell as a linter ([#12097](https://github.com/rapidsai/cudf/pull/12097)) [@benfred](https://github.com/benfred)
- Enable specifying exceptions in error macros ([#12078](https://github.com/rapidsai/cudf/pull/12078)) [@vyasr](https://github.com/vyasr)
- Move `_label_encoding` from Series to Column ([#12040](https://github.com/rapidsai/cudf/pull/12040)) [@shwina](https://github.com/shwina)
- Add GitHub Actions Workflows ([#12002](https://github.com/rapidsai/cudf/pull/12002)) [@ajschmidt8](https://github.com/ajschmidt8)
- Consolidate dask-cudf `groupby_agg` calls in one place ([#10835](https://github.com/rapidsai/cudf/pull/10835)) [@charlesbluca](https://github.com/charlesbluca)
# cuDF 22.12.00 (8 Dec 2022)
## 🚨 Breaking Changes
- Add JNI for `substring` without 'end' parameter. ([#12113](https://github.com/rapidsai/cudf/pull/12113)) [@firestarman](https://github.com/firestarman)
- Refactor `purge_nonempty_nulls` ([#12111](https://github.com/rapidsai/cudf/pull/12111)) [@ttnghia](https://github.com/ttnghia)
- Create an `int8` column in `read_csv` when all elements are missing ([#12110](https://github.com/rapidsai/cudf/pull/12110)) [@vuule](https://github.com/vuule)
- Throw an error when libcudf is built without cuFile and `LIBCUDF_CUFILE_POLICY` is set to `"ALWAYS"` ([#12080](https://github.com/rapidsai/cudf/pull/12080)) [@vuule](https://github.com/vuule)
- Fix type promotion edge cases in numerical binops ([#12074](https://github.com/rapidsai/cudf/pull/12074)) [@wence-](https://github.com/wence-)
- Reduce/Remove reliance on `**kwargs` and `*args` in `IO` readers & writers ([#12025](https://github.com/rapidsai/cudf/pull/12025)) [@galipremsagar](https://github.com/galipremsagar)
- Rollback of `DeviceBufferLike` ([#12009](https://github.com/rapidsai/cudf/pull/12009)) [@madsbk](https://github.com/madsbk)
- Remove unused `managed_allocator` ([#12005](https://github.com/rapidsai/cudf/pull/12005)) [@vyasr](https://github.com/vyasr)
- Pass column names to `write_csv` instead of `table_metadata` pointer ([#11972](https://github.com/rapidsai/cudf/pull/11972)) [@vuule](https://github.com/vuule)
- Accept const refs instead of const unique_ptr refs in reduce and scan APIs. ([#11960](https://github.com/rapidsai/cudf/pull/11960)) [@vyasr](https://github.com/vyasr)
- Default to equal NaNs in make_merge_sets_aggregation. ([#11952](https://github.com/rapidsai/cudf/pull/11952)) [@bdice](https://github.com/bdice)
- Remove validation that requires introspection ([#11938](https://github.com/rapidsai/cudf/pull/11938)) [@vyasr](https://github.com/vyasr)
- Trim quotes for non-string values in nested json parsing ([#11898](https://github.com/rapidsai/cudf/pull/11898)) [@karthikeyann](https://github.com/karthikeyann)
- Add tests ensuring that cudf's default stream is always used ([#11875](https://github.com/rapidsai/cudf/pull/11875)) [@vyasr](https://github.com/vyasr)
- Support nested types as groupby keys in libcudf ([#11792](https://github.com/rapidsai/cudf/pull/11792)) [@PointKernel](https://github.com/PointKernel)
- Default to equal NaNs in make_collect_set_aggregation. ([#11621](https://github.com/rapidsai/cudf/pull/11621)) [@bdice](https://github.com/bdice)
- Removing int8 column option from parquet byte_array writing ([#11539](https://github.com/rapidsai/cudf/pull/11539)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- part1: Simplify BaseIndex to an abstract class ([#10389](https://github.com/rapidsai/cudf/pull/10389)) [@skirui-source](https://github.com/skirui-source)
## 🐛 Bug Fixes
- Fix include line for IO Cython modules ([#12250](https://github.com/rapidsai/cudf/pull/12250)) [@vyasr](https://github.com/vyasr)
- Make dask pinning looser ([#12231](https://github.com/rapidsai/cudf/pull/12231)) [@vyasr](https://github.com/vyasr)
- Workaround for CUB segmented-sort bug with boolean keys ([#12217](https://github.com/rapidsai/cudf/pull/12217)) [@davidwendt](https://github.com/davidwendt)
- Fix `from_dict` backend dispatch to match upstream `dask` ([#12203](https://github.com/rapidsai/cudf/pull/12203)) [@galipremsagar](https://github.com/galipremsagar)
- Merge branch-22.10 into branch-22.12 ([#12198](https://github.com/rapidsai/cudf/pull/12198)) [@davidwendt](https://github.com/davidwendt)
- Fix compression in ORC writer ([#12194](https://github.com/rapidsai/cudf/pull/12194)) [@vuule](https://github.com/vuule)
- Don't use CMake 3.25.0 as it has a show stopping FindCUDAToolkit bug ([#12188](https://github.com/rapidsai/cudf/pull/12188)) [@robertmaynard](https://github.com/robertmaynard)
- Fix data corruption when reading ORC files with empty stripes ([#12160](https://github.com/rapidsai/cudf/pull/12160)) [@vuule](https://github.com/vuule)
- Fix decimal binary operations ([#12142](https://github.com/rapidsai/cudf/pull/12142)) [@galipremsagar](https://github.com/galipremsagar)
- Ensure dlpack include is provided to cudf interop lib ([#12139](https://github.com/rapidsai/cudf/pull/12139)) [@robertmaynard](https://github.com/robertmaynard)
- Safely allocate `udf_string` pointers in `strings_udf` ([#12138](https://github.com/rapidsai/cudf/pull/12138)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Fix/disable jitify lto ([#12122](https://github.com/rapidsai/cudf/pull/12122)) [@robertmaynard](https://github.com/robertmaynard)
- Fix conditional_full_join benchmark ([#12121](https://github.com/rapidsai/cudf/pull/12121)) [@GregoryKimball](https://github.com/GregoryKimball)
- Fix regex working-memory-size refactor error ([#12119](https://github.com/rapidsai/cudf/pull/12119)) [@davidwendt](https://github.com/davidwendt)
- Add in negative size checks for columns ([#12118](https://github.com/rapidsai/cudf/pull/12118)) [@revans2](https://github.com/revans2)
- Add JNI for `substring` without 'end' parameter. ([#12113](https://github.com/rapidsai/cudf/pull/12113)) [@firestarman](https://github.com/firestarman)
- Fix reading of CSV files with blank second row ([#12098](https://github.com/rapidsai/cudf/pull/12098)) [@vuule](https://github.com/vuule)
- Fix an error in IO with `GzipFile` type ([#12085](https://github.com/rapidsai/cudf/pull/12085)) [@galipremsagar](https://github.com/galipremsagar)
- Workaround groupby aggregate thrust::copy_if overflow ([#12079](https://github.com/rapidsai/cudf/pull/12079)) [@davidwendt](https://github.com/davidwendt)
- Fix alignment of compressed blocks in ORC writer ([#12077](https://github.com/rapidsai/cudf/pull/12077)) [@vuule](https://github.com/vuule)
- Fix singleton-range `__setitem__` edge case ([#12075](https://github.com/rapidsai/cudf/pull/12075)) [@wence-](https://github.com/wence-)
- Fix type promotion edge cases in numerical binops ([#12074](https://github.com/rapidsai/cudf/pull/12074)) [@wence-](https://github.com/wence-)
- Force using old fmt in nvbench. ([#12067](https://github.com/rapidsai/cudf/pull/12067)) [@vyasr](https://github.com/vyasr)
- Fixes List offset bug in Nested JSON reader ([#12060](https://github.com/rapidsai/cudf/pull/12060)) [@karthikeyann](https://github.com/karthikeyann)
- Allow falling back to `shim_60.ptx` by default in `strings_udf` ([#12056](https://github.com/rapidsai/cudf/pull/12056)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Force black exclusions for pre-commit. ([#12036](https://github.com/rapidsai/cudf/pull/12036)) [@bdice](https://github.com/bdice)
- Add `memory_usage` & `items` implementation for `Struct` column & dtype ([#12033](https://github.com/rapidsai/cudf/pull/12033)) [@galipremsagar](https://github.com/galipremsagar)
- Reduce/Remove reliance on `**kwargs` and `*args` in `IO` readers & writers ([#12025](https://github.com/rapidsai/cudf/pull/12025)) [@galipremsagar](https://github.com/galipremsagar)
- Fixes bug in csv_reader_options construction in cython ([#12021](https://github.com/rapidsai/cudf/pull/12021)) [@karthikeyann](https://github.com/karthikeyann)
- Fix issues when both `usecols` and `names` options are used in `read_csv` ([#12018](https://github.com/rapidsai/cudf/pull/12018)) [@vuule](https://github.com/vuule)
- Port thrust's pinned_allocator to cudf, since Thrust 1.17 removes the type ([#12004](https://github.com/rapidsai/cudf/pull/12004)) [@robertmaynard](https://github.com/robertmaynard)
- Revert "Replace most of preprocessor usage in nvcomp adapter with `constexpr`" ([#11999](https://github.com/rapidsai/cudf/pull/11999)) [@vuule](https://github.com/vuule)
- Fix bug where `df.loc` resulting in single row could give wrong index ([#11998](https://github.com/rapidsai/cudf/pull/11998)) [@eriknw](https://github.com/eriknw)
- Switch to DISABLE_DEPRECATION_WARNINGS to match other RAPIDS projects ([#11989](https://github.com/rapidsai/cudf/pull/11989)) [@robertmaynard](https://github.com/robertmaynard)
- Fix maximum page size estimate in Parquet writer ([#11962](https://github.com/rapidsai/cudf/pull/11962)) [@vuule](https://github.com/vuule)
- Fix local offset handling in bgzip reader ([#11918](https://github.com/rapidsai/cudf/pull/11918)) [@upsj](https://github.com/upsj)
- Fix an issue reading struct-of-list types in Parquet. ([#11910](https://github.com/rapidsai/cudf/pull/11910)) [@nvdbaranec](https://github.com/nvdbaranec)
- Fix memcheck error in TypeInference.Timestamp gtest ([#11905](https://github.com/rapidsai/cudf/pull/11905)) [@davidwendt](https://github.com/davidwendt)
- Fix type casting in Series.__setitem__ ([#11904](https://github.com/rapidsai/cudf/pull/11904)) [@wence-](https://github.com/wence-)
- Fix memcheck error in get_dremel_data ([#11903](https://github.com/rapidsai/cudf/pull/11903)) [@davidwendt](https://github.com/davidwendt)
- Fixes Unsupported column type error due to empty list columns in Nested JSON reader ([#11897](https://github.com/rapidsai/cudf/pull/11897)) [@karthikeyann](https://github.com/karthikeyann)
- Fix segmented-sort to ignore indices outside the offsets ([#11888](https://github.com/rapidsai/cudf/pull/11888)) [@davidwendt](https://github.com/davidwendt)
- Fix cudf::stable_sorted_order for NaN and -NaN in FLOAT64 columns ([#11874](https://github.com/rapidsai/cudf/pull/11874)) [@davidwendt](https://github.com/davidwendt)
- Fix writing of Parquet files with many fragments ([#11869](https://github.com/rapidsai/cudf/pull/11869)) [@etseidl](https://github.com/etseidl)
- Fix RangeIndex unary operators. ([#11868](https://github.com/rapidsai/cudf/pull/11868)) [@vyasr](https://github.com/vyasr)
- JNI Avoid NPE for reading host binary data ([#11865](https://github.com/rapidsai/cudf/pull/11865)) [@revans2](https://github.com/revans2)
- Fix decimal benchmark input data generation ([#11863](https://github.com/rapidsai/cudf/pull/11863)) [@karthikeyann](https://github.com/karthikeyann)
- Fix pre-commit copyright check ([#11860](https://github.com/rapidsai/cudf/pull/11860)) [@galipremsagar](https://github.com/galipremsagar)
- Fix Parquet support for seconds and milliseconds duration types ([#11854](https://github.com/rapidsai/cudf/pull/11854)) [@vuule](https://github.com/vuule)
- Ensure better compiler cache results between cudf cal-ver branches ([#11835](https://github.com/rapidsai/cudf/pull/11835)) [@robertmaynard](https://github.com/robertmaynard)
- Fix make_column_from_scalar for all-null strings column ([#11807](https://github.com/rapidsai/cudf/pull/11807)) [@davidwendt](https://github.com/davidwendt)
- Tell jitify_preprocess where to search for libnvrtc ([#11787](https://github.com/rapidsai/cudf/pull/11787)) [@robertmaynard](https://github.com/robertmaynard)
- add V2 page header support to parquet reader ([#11778](https://github.com/rapidsai/cudf/pull/11778)) [@etseidl](https://github.com/etseidl)
- Parquet reader: bug fix for a num_rows/skip_rows corner case, w/optimization for nested preprocessing ([#11752](https://github.com/rapidsai/cudf/pull/11752)) [@nvdbaranec](https://github.com/nvdbaranec)
- Determine if Arrow has S3 support at runtime in unit test. ([#11560](https://github.com/rapidsai/cudf/pull/11560)) [@bdice](https://github.com/bdice)
## 📖 Documentation
- Use rapidsai CODE_OF_CONDUCT.md ([#12166](https://github.com/rapidsai/cudf/pull/12166)) [@bdice](https://github.com/bdice)
- Add symlinks to notebooks. ([#12128](https://github.com/rapidsai/cudf/pull/12128)) [@bdice](https://github.com/bdice)
- Add `truncate` API to python doc pages ([#12109](https://github.com/rapidsai/cudf/pull/12109)) [@galipremsagar](https://github.com/galipremsagar)
- Update Numba docs links. ([#12107](https://github.com/rapidsai/cudf/pull/12107)) [@bdice](https://github.com/bdice)
- Remove "Multi-GPU with Dask-cuDF" notebook. ([#12095](https://github.com/rapidsai/cudf/pull/12095)) [@bdice](https://github.com/bdice)
- Fix link to c++ developer guide from `CONTRIBUTING.md` ([#12084](https://github.com/rapidsai/cudf/pull/12084)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Add pivot_table and crosstab to docs. ([#12014](https://github.com/rapidsai/cudf/pull/12014)) [@bdice](https://github.com/bdice)
- Fix doxygen text for cudf::dictionary::encode ([#11991](https://github.com/rapidsai/cudf/pull/11991)) [@davidwendt](https://github.com/davidwendt)
- Replace default_stream_value with get_default_stream in docs. ([#11985](https://github.com/rapidsai/cudf/pull/11985)) [@vyasr](https://github.com/vyasr)
- Add dtype docs pages and docstrings for `cudf` specific dtypes ([#11974](https://github.com/rapidsai/cudf/pull/11974)) [@galipremsagar](https://github.com/galipremsagar)
- Update Unit Testing in libcudf guidelines to code tests outside the cudf::test namespace ([#11959](https://github.com/rapidsai/cudf/pull/11959)) [@davidwendt](https://github.com/davidwendt)
- Rename libcudf++ to libcudf. ([#11953](https://github.com/rapidsai/cudf/pull/11953)) [@bdice](https://github.com/bdice)
- Fix documentation referring to removed as_gpu_matrix method. ([#11937](https://github.com/rapidsai/cudf/pull/11937)) [@bdice](https://github.com/bdice)
- Remove "experimental" warning for struct columns in ORC reader and writer ([#11880](https://github.com/rapidsai/cudf/pull/11880)) [@vuule](https://github.com/vuule)
- Initial draft of policies and guidelines for libcudf usage. ([#11853](https://github.com/rapidsai/cudf/pull/11853)) [@vyasr](https://github.com/vyasr)
- Add clear indication of non-GPU accelerated parameters in read_json docstring ([#11825](https://github.com/rapidsai/cudf/pull/11825)) [@GregoryKimball](https://github.com/GregoryKimball)
- Add developer docs for writing tests ([#11199](https://github.com/rapidsai/cudf/pull/11199)) [@vyasr](https://github.com/vyasr)
## 🚀 New Features
- Adds an EventHandler to Java MemoryBuffer to be invoked on close ([#12125](https://github.com/rapidsai/cudf/pull/12125)) [@abellina](https://github.com/abellina)
- Support `+` in `strings_udf` ([#12117](https://github.com/rapidsai/cudf/pull/12117)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Support `upper` and `lower` in `strings_udf` ([#12099](https://github.com/rapidsai/cudf/pull/12099)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Add wheel builds ([#12096](https://github.com/rapidsai/cudf/pull/12096)) [@vyasr](https://github.com/vyasr)
- Allow setting malloc heap size in string udfs ([#12094](https://github.com/rapidsai/cudf/pull/12094)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Support `strip`, `lstrip`, and `rstrip` in `strings_udf` ([#12091](https://github.com/rapidsai/cudf/pull/12091)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Mark nvcomp zstd compression stable ([#12059](https://github.com/rapidsai/cudf/pull/12059)) [@jbrennan333](https://github.com/jbrennan333)
- Add debug-only onAllocated/onDeallocated to RmmEventHandler ([#12054](https://github.com/rapidsai/cudf/pull/12054)) [@abellina](https://github.com/abellina)
- Enable building against the libarrow contained in pyarrow ([#12034](https://github.com/rapidsai/cudf/pull/12034)) [@vyasr](https://github.com/vyasr)
- Add strings `like` jni and native method ([#12032](https://github.com/rapidsai/cudf/pull/12032)) [@cindyyuanjiang](https://github.com/cindyyuanjiang)
- Cleanup common parsing code in JSON, CSV reader ([#12022](https://github.com/rapidsai/cudf/pull/12022)) [@karthikeyann](https://github.com/karthikeyann)
- byte_range support for JSON Lines format ([#12017](https://github.com/rapidsai/cudf/pull/12017)) [@karthikeyann](https://github.com/karthikeyann)
- Minor cleanup of root CMakeLists.txt for better organization ([#11988](https://github.com/rapidsai/cudf/pull/11988)) [@robertmaynard](https://github.com/robertmaynard)
- Add inplace arithmetic operators to `MaskedType` ([#11987](https://github.com/rapidsai/cudf/pull/11987)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Implement JNI for chunked Parquet reader ([#11961](https://github.com/rapidsai/cudf/pull/11961)) [@ttnghia](https://github.com/ttnghia)
- Add method argument to DataFrame.quantile ([#11957](https://github.com/rapidsai/cudf/pull/11957)) [@rjzamora](https://github.com/rjzamora)
- Add gpu memory watermark apis to JNI ([#11950](https://github.com/rapidsai/cudf/pull/11950)) [@abellina](https://github.com/abellina)
- Adds retryCount to RmmEventHandler.onAllocFailure ([#11940](https://github.com/rapidsai/cudf/pull/11940)) [@abellina](https://github.com/abellina)
- Enable returning string data from UDFs used through `apply` ([#11933](https://github.com/rapidsai/cudf/pull/11933)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Switch over to rapids-cmake patches for thrust ([#11921](https://github.com/rapidsai/cudf/pull/11921)) [@robertmaynard](https://github.com/robertmaynard)
- Add strings udf C++ classes and functions for phase II ([#11912](https://github.com/rapidsai/cudf/pull/11912)) [@davidwendt](https://github.com/davidwendt)
- Trim quotes for non-string values in nested json parsing ([#11898](https://github.com/rapidsai/cudf/pull/11898)) [@karthikeyann](https://github.com/karthikeyann)
- Enable CEC for `strings_udf` ([#11884](https://github.com/rapidsai/cudf/pull/11884)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- ArrowIPCTableWriter writes en empty batch in the case of an empty table. ([#11883](https://github.com/rapidsai/cudf/pull/11883)) [@firestarman](https://github.com/firestarman)
- Implement chunked Parquet reader ([#11867](https://github.com/rapidsai/cudf/pull/11867)) [@ttnghia](https://github.com/ttnghia)
- Add `read_orc_metadata` to libcudf ([#11815](https://github.com/rapidsai/cudf/pull/11815)) [@vuule](https://github.com/vuule)
- Support nested types as groupby keys in libcudf ([#11792](https://github.com/rapidsai/cudf/pull/11792)) [@PointKernel](https://github.com/PointKernel)
- Adding feature Truncate to DataFrame and Series ([#11435](https://github.com/rapidsai/cudf/pull/11435)) [@VamsiTallam95](https://github.com/VamsiTallam95)
## 🛠️ Improvements
- Reduce number of tests marked `spilling` ([#12197](https://github.com/rapidsai/cudf/pull/12197)) [@madsbk](https://github.com/madsbk)
- Pin `dask` and `distributed` for release ([#12165](https://github.com/rapidsai/cudf/pull/12165)) [@galipremsagar](https://github.com/galipremsagar)
- Don't rely on GNU find in headers_test.sh ([#12164](https://github.com/rapidsai/cudf/pull/12164)) [@wence-](https://github.com/wence-)
- Update cp.clip call ([#12148](https://github.com/rapidsai/cudf/pull/12148)) [@quasiben](https://github.com/quasiben)
- Enable automatic column projection in groupby().agg ([#12124](https://github.com/rapidsai/cudf/pull/12124)) [@rjzamora](https://github.com/rjzamora)
- Refactor `purge_nonempty_nulls` ([#12111](https://github.com/rapidsai/cudf/pull/12111)) [@ttnghia](https://github.com/ttnghia)
- Create an `int8` column in `read_csv` when all elements are missing ([#12110](https://github.com/rapidsai/cudf/pull/12110)) [@vuule](https://github.com/vuule)
- Spilling to host memory ([#12106](https://github.com/rapidsai/cudf/pull/12106)) [@madsbk](https://github.com/madsbk)
- First pass of `pd.read_orc` changes in tests ([#12103](https://github.com/rapidsai/cudf/pull/12103)) [@galipremsagar](https://github.com/galipremsagar)
- Expose engine argument in dask_cudf.read_json ([#12101](https://github.com/rapidsai/cudf/pull/12101)) [@rjzamora](https://github.com/rjzamora)
- Remove CUDA 10 compatibility code. ([#12088](https://github.com/rapidsai/cudf/pull/12088)) [@bdice](https://github.com/bdice)
- Move and update `dask` nigthly install in CI ([#12082](https://github.com/rapidsai/cudf/pull/12082)) [@galipremsagar](https://github.com/galipremsagar)
- Throw an error when libcudf is built without cuFile and `LIBCUDF_CUFILE_POLICY` is set to `"ALWAYS"` ([#12080](https://github.com/rapidsai/cudf/pull/12080)) [@vuule](https://github.com/vuule)
- Remove macros that inspect the contents of exceptions ([#12076](https://github.com/rapidsai/cudf/pull/12076)) [@vyasr](https://github.com/vyasr)
- Fix ingest_raw_data performance issue in Nested JSON reader due to RVO ([#12070](https://github.com/rapidsai/cudf/pull/12070)) [@karthikeyann](https://github.com/karthikeyann)
- Remove overflow error during decimal binops ([#12063](https://github.com/rapidsai/cudf/pull/12063)) [@galipremsagar](https://github.com/galipremsagar)
- Change cudf::detail::tdigest to cudf::tdigest::detail ([#12050](https://github.com/rapidsai/cudf/pull/12050)) [@davidwendt](https://github.com/davidwendt)
- Fix quantile gtests coded in namespace cudf::test ([#12049](https://github.com/rapidsai/cudf/pull/12049)) [@davidwendt](https://github.com/davidwendt)
- Add support for `DataFrame.from_dict`\`to_dict` and `Series.to_dict` ([#12048](https://github.com/rapidsai/cudf/pull/12048)) [@galipremsagar](https://github.com/galipremsagar)
- Refactor Parquet reader ([#12046](https://github.com/rapidsai/cudf/pull/12046)) [@ttnghia](https://github.com/ttnghia)
- Forward merge 22.10 into 22.12 ([#12045](https://github.com/rapidsai/cudf/pull/12045)) [@vyasr](https://github.com/vyasr)
- Standardize newlines at ends of files. ([#12042](https://github.com/rapidsai/cudf/pull/12042)) [@bdice](https://github.com/bdice)
- Trim trailing whitespace from all files. ([#12041](https://github.com/rapidsai/cudf/pull/12041)) [@bdice](https://github.com/bdice)
- Use nosync policy in gather and scatter implementations. ([#12038](https://github.com/rapidsai/cudf/pull/12038)) [@bdice](https://github.com/bdice)
- Remove smart quotes from all docstrings. ([#12035](https://github.com/rapidsai/cudf/pull/12035)) [@bdice](https://github.com/bdice)
- Update cuda-python dependency to 11.7.1 ([#12030](https://github.com/rapidsai/cudf/pull/12030)) [@galipremsagar](https://github.com/galipremsagar)
- Add cython-lint to pre-commit checks. ([#12020](https://github.com/rapidsai/cudf/pull/12020)) [@bdice](https://github.com/bdice)
- Use pragma once ([#12019](https://github.com/rapidsai/cudf/pull/12019)) [@bdice](https://github.com/bdice)
- New GHA to add issues/prs to project board ([#12016](https://github.com/rapidsai/cudf/pull/12016)) [@jarmak-nv](https://github.com/jarmak-nv)
- Add DataFrame.pivot_table. ([#12015](https://github.com/rapidsai/cudf/pull/12015)) [@bdice](https://github.com/bdice)
- Rollback of `DeviceBufferLike` ([#12009](https://github.com/rapidsai/cudf/pull/12009)) [@madsbk](https://github.com/madsbk)
- Remove default parameters for nvtext::detail functions ([#12007](https://github.com/rapidsai/cudf/pull/12007)) [@davidwendt](https://github.com/davidwendt)
- Remove default parameters for cudf::dictionary::detail functions ([#12006](https://github.com/rapidsai/cudf/pull/12006)) [@davidwendt](https://github.com/davidwendt)
- Remove unused `managed_allocator` ([#12005](https://github.com/rapidsai/cudf/pull/12005)) [@vyasr](https://github.com/vyasr)
- Remove default parameters for cudf::strings::detail functions ([#12003](https://github.com/rapidsai/cudf/pull/12003)) [@davidwendt](https://github.com/davidwendt)
- Remove unnecessary code from dask-cudf _Frame ([#12001](https://github.com/rapidsai/cudf/pull/12001)) [@rjzamora](https://github.com/rjzamora)
- Ignore python docs build artifacts ([#12000](https://github.com/rapidsai/cudf/pull/12000)) [@galipremsagar](https://github.com/galipremsagar)
- Use rapids-cmake for google benchmark. ([#11997](https://github.com/rapidsai/cudf/pull/11997)) [@vyasr](https://github.com/vyasr)
- Leverage rapids_cython for more automated RPATH handling ([#11996](https://github.com/rapidsai/cudf/pull/11996)) [@vyasr](https://github.com/vyasr)
- Remove stale labeler ([#11995](https://github.com/rapidsai/cudf/pull/11995)) [@raydouglass](https://github.com/raydouglass)
- Move protobuf compilation to CMake ([#11986](https://github.com/rapidsai/cudf/pull/11986)) [@vyasr](https://github.com/vyasr)
- Replace most of preprocessor usage in nvcomp adapter with `constexpr` ([#11980](https://github.com/rapidsai/cudf/pull/11980)) [@vuule](https://github.com/vuule)
- Add missing noexcepts to column_in_metadata methods ([#11973](https://github.com/rapidsai/cudf/pull/11973)) [@vyasr](https://github.com/vyasr)
- Pass column names to `write_csv` instead of `table_metadata` pointer ([#11972](https://github.com/rapidsai/cudf/pull/11972)) [@vuule](https://github.com/vuule)
- Accelerate libcudf segmented sort with CUB segmented sort ([#11969](https://github.com/rapidsai/cudf/pull/11969)) [@davidwendt](https://github.com/davidwendt)
- Feature/remove default streams ([#11967](https://github.com/rapidsai/cudf/pull/11967)) [@vyasr](https://github.com/vyasr)
- Add pool memory resource to libcudf basic example ([#11966](https://github.com/rapidsai/cudf/pull/11966)) [@davidwendt](https://github.com/davidwendt)
- Fix some libcudf calls to cudf::detail::gather ([#11963](https://github.com/rapidsai/cudf/pull/11963)) [@davidwendt](https://github.com/davidwendt)
- Accept const refs instead of const unique_ptr refs in reduce and scan APIs. ([#11960](https://github.com/rapidsai/cudf/pull/11960)) [@vyasr](https://github.com/vyasr)
- Add deprecation warning for set_allocator. ([#11958](https://github.com/rapidsai/cudf/pull/11958)) [@vyasr](https://github.com/vyasr)
- Fix lists and structs gtests coded in namespace cudf::test ([#11956](https://github.com/rapidsai/cudf/pull/11956)) [@davidwendt](https://github.com/davidwendt)
- Add full page indexes to Parquet writer benchmarks ([#11955](https://github.com/rapidsai/cudf/pull/11955)) [@etseidl](https://github.com/etseidl)
- Use gather-based strings factory in cudf::strings::strip ([#11954](https://github.com/rapidsai/cudf/pull/11954)) [@davidwendt](https://github.com/davidwendt)
- Default to equal NaNs in make_merge_sets_aggregation. ([#11952](https://github.com/rapidsai/cudf/pull/11952)) [@bdice](https://github.com/bdice)
- Add `strip_delimiters` option to `read_text` ([#11946](https://github.com/rapidsai/cudf/pull/11946)) [@upsj](https://github.com/upsj)
- Refactor multibyte_split `output_builder` ([#11945](https://github.com/rapidsai/cudf/pull/11945)) [@upsj](https://github.com/upsj)
- Remove validation that requires introspection ([#11938](https://github.com/rapidsai/cudf/pull/11938)) [@vyasr](https://github.com/vyasr)
- Add `.str.find_multiple` API ([#11928](https://github.com/rapidsai/cudf/pull/11928)) [@galipremsagar](https://github.com/galipremsagar)
- Add regex_program class for use with all regex APIs ([#11927](https://github.com/rapidsai/cudf/pull/11927)) [@davidwendt](https://github.com/davidwendt)
- Enable backend dispatching for Dask-DataFrame creation ([#11920](https://github.com/rapidsai/cudf/pull/11920)) [@rjzamora](https://github.com/rjzamora)
- Performance improvement in JSON Tree traversal ([#11919](https://github.com/rapidsai/cudf/pull/11919)) [@karthikeyann](https://github.com/karthikeyann)
- Fix some gtests incorrectly coded in namespace cudf::test (part I) ([#11917](https://github.com/rapidsai/cudf/pull/11917)) [@davidwendt](https://github.com/davidwendt)
- Refactor pad/zfill functions for reuse with strings udf ([#11914](https://github.com/rapidsai/cudf/pull/11914)) [@davidwendt](https://github.com/davidwendt)
- Add `nanosecond` & `microsecond` to `DatetimeProperties` ([#11911](https://github.com/rapidsai/cudf/pull/11911)) [@galipremsagar](https://github.com/galipremsagar)
- Pin mimesis version in setup.py. ([#11906](https://github.com/rapidsai/cudf/pull/11906)) [@bdice](https://github.com/bdice)
- Error on `ListColumn` or any new unsupported column in `cudf.Index` ([#11902](https://github.com/rapidsai/cudf/pull/11902)) [@galipremsagar](https://github.com/galipremsagar)
- Add thrust output iterator fix (1805) to thrust.patch ([#11900](https://github.com/rapidsai/cudf/pull/11900)) [@davidwendt](https://github.com/davidwendt)
- Relax `codecov` threshold diff ([#11899](https://github.com/rapidsai/cudf/pull/11899)) [@galipremsagar](https://github.com/galipremsagar)
- Use public APIs in STREAM_COMPACTION_NVBENCH ([#11892](https://github.com/rapidsai/cudf/pull/11892)) [@GregoryKimball](https://github.com/GregoryKimball)
- Add coverage for string UDF tests. ([#11891](https://github.com/rapidsai/cudf/pull/11891)) [@vyasr](https://github.com/vyasr)
- Provide `data_chunk_source` wrapper for `datasource` ([#11886](https://github.com/rapidsai/cudf/pull/11886)) [@upsj](https://github.com/upsj)
- Handle `multibyte_split` byte_range out-of-bounds offsets on host ([#11885](https://github.com/rapidsai/cudf/pull/11885)) [@upsj](https://github.com/upsj)
- Add tests ensuring that cudf's default stream is always used ([#11875](https://github.com/rapidsai/cudf/pull/11875)) [@vyasr](https://github.com/vyasr)
- Change expect_strings_empty into expect_column_empty libcudf test utility ([#11873](https://github.com/rapidsai/cudf/pull/11873)) [@davidwendt](https://github.com/davidwendt)
- Add ngroup ([#11871](https://github.com/rapidsai/cudf/pull/11871)) [@shwina](https://github.com/shwina)
- Reduce memory usage in nested JSON parser - tree generation ([#11864](https://github.com/rapidsai/cudf/pull/11864)) [@karthikeyann](https://github.com/karthikeyann)
- Unpin `dask` and `distributed` for development ([#11859](https://github.com/rapidsai/cudf/pull/11859)) [@galipremsagar](https://github.com/galipremsagar)
- Remove unused includes for table/row_operators ([#11857](https://github.com/rapidsai/cudf/pull/11857)) [@GregoryKimball](https://github.com/GregoryKimball)
- Use conda-forge's `pyorc` ([#11855](https://github.com/rapidsai/cudf/pull/11855)) [@jakirkham](https://github.com/jakirkham)
- Add libcudf strings examples ([#11849](https://github.com/rapidsai/cudf/pull/11849)) [@davidwendt](https://github.com/davidwendt)
- Remove `cudf_io` namespace alias ([#11827](https://github.com/rapidsai/cudf/pull/11827)) [@vuule](https://github.com/vuule)
- Test/remove thrust vector usage ([#11813](https://github.com/rapidsai/cudf/pull/11813)) [@vyasr](https://github.com/vyasr)
- Add BGZIP reader to python `read_text` ([#11802](https://github.com/rapidsai/cudf/pull/11802)) [@upsj](https://github.com/upsj)
- Merge branch-22.10 into branch-22.12 ([#11801](https://github.com/rapidsai/cudf/pull/11801)) [@davidwendt](https://github.com/davidwendt)
- Fix compile warning from CUDF_FUNC_RANGE in a member function ([#11798](https://github.com/rapidsai/cudf/pull/11798)) [@davidwendt](https://github.com/davidwendt)
- Update cudf JNI version to 22.12.0-SNAPSHOT ([#11764](https://github.com/rapidsai/cudf/pull/11764)) [@pxLi](https://github.com/pxLi)
- Update flake8 to 5.0.4 and use flake8-force to check Cython. ([#11736](https://github.com/rapidsai/cudf/pull/11736)) [@bdice](https://github.com/bdice)
- Add BGZIP multibyte_split benchmark ([#11723](https://github.com/rapidsai/cudf/pull/11723)) [@upsj](https://github.com/upsj)
- Bifurcate Dependency Lists ([#11674](https://github.com/rapidsai/cudf/pull/11674)) [@bdice](https://github.com/bdice)
- Default to equal NaNs in make_collect_set_aggregation. ([#11621](https://github.com/rapidsai/cudf/pull/11621)) [@bdice](https://github.com/bdice)
- Conform "bench_isin" to match generator column names ([#11549](https://github.com/rapidsai/cudf/pull/11549)) [@GregoryKimball](https://github.com/GregoryKimball)
- Removing int8 column option from parquet byte_array writing ([#11539](https://github.com/rapidsai/cudf/pull/11539)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Add checks for HLG layers in dask-cudf groupby tests ([#10853](https://github.com/rapidsai/cudf/pull/10853)) [@charlesbluca](https://github.com/charlesbluca)
- part1: Simplify BaseIndex to an abstract class ([#10389](https://github.com/rapidsai/cudf/pull/10389)) [@skirui-source](https://github.com/skirui-source)
- Make all `nvcc` warnings into errors ([#8916](https://github.com/rapidsai/cudf/pull/8916)) [@trxcllnt](https://github.com/trxcllnt)
# cuDF 22.10.00 (12 Oct 2022)
## 🚨 Breaking Changes
- Disable Zstandard decompression on nvCOMP 2.4 and Pascal GPus ([#11856](https://github.com/rapidsai/cudf/pull/11856)) [@vuule](https://github.com/vuule)
- Disable nvCOMP DEFLATE integration ([#11811](https://github.com/rapidsai/cudf/pull/11811)) [@vuule](https://github.com/vuule)
- Fix return type of `Index.isna` & `Index.notna` ([#11769](https://github.com/rapidsai/cudf/pull/11769)) [@galipremsagar](https://github.com/galipremsagar)
- Remove `kwargs` in `read_csv` & `to_csv` ([#11762](https://github.com/rapidsai/cudf/pull/11762)) [@galipremsagar](https://github.com/galipremsagar)
- Fix `cudf::partition*` APIs that do not return offsets for empty output table ([#11709](https://github.com/rapidsai/cudf/pull/11709)) [@ttnghia](https://github.com/ttnghia)
- Fix regex negated classes to not automatically include new-lines ([#11644](https://github.com/rapidsai/cudf/pull/11644)) [@davidwendt](https://github.com/davidwendt)
- Update zfill to match Python output ([#11634](https://github.com/rapidsai/cudf/pull/11634)) [@davidwendt](https://github.com/davidwendt)
- Upgrade `pandas` to `1.5` ([#11617](https://github.com/rapidsai/cudf/pull/11617)) [@galipremsagar](https://github.com/galipremsagar)
- Change default value of `ordered` to `False` in `CategoricalDtype` ([#11604](https://github.com/rapidsai/cudf/pull/11604)) [@galipremsagar](https://github.com/galipremsagar)
- Move cudf::strings::findall_record to cudf::strings::findall ([#11575](https://github.com/rapidsai/cudf/pull/11575)) [@davidwendt](https://github.com/davidwendt)
- Adding optional parquet reader schema ([#11524](https://github.com/rapidsai/cudf/pull/11524)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Deprecate `skiprows` and `num_rows` in `read_orc` ([#11522](https://github.com/rapidsai/cudf/pull/11522)) [@galipremsagar](https://github.com/galipremsagar)
- Remove support for skip_rows / num_rows options in the parquet reader. ([#11503](https://github.com/rapidsai/cudf/pull/11503)) [@nvdbaranec](https://github.com/nvdbaranec)
- Drop support for `skiprows` and `num_rows` in `cudf.read_parquet` ([#11480](https://github.com/rapidsai/cudf/pull/11480)) [@galipremsagar](https://github.com/galipremsagar)
- Disable Arrow S3 support by default. ([#11470](https://github.com/rapidsai/cudf/pull/11470)) [@bdice](https://github.com/bdice)
- Convert thrust::optional usages to std::optional ([#11455](https://github.com/rapidsai/cudf/pull/11455)) [@robertmaynard](https://github.com/robertmaynard)
- Remove unused is_struct trait. ([#11450](https://github.com/rapidsai/cudf/pull/11450)) [@bdice](https://github.com/bdice)
- Refactor the `Buffer` class ([#11447](https://github.com/rapidsai/cudf/pull/11447)) [@madsbk](https://github.com/madsbk)
- Return empty dataframe when reading an ORC file using empty `columns` option ([#11446](https://github.com/rapidsai/cudf/pull/11446)) [@vuule](https://github.com/vuule)
- Refactor pad_side and strip_type enums into side_type enum ([#11438](https://github.com/rapidsai/cudf/pull/11438)) [@davidwendt](https://github.com/davidwendt)
- Remove HASH_SERIAL_MURMUR3 / serial32BitMurmurHash3 ([#11383](https://github.com/rapidsai/cudf/pull/11383)) [@bdice](https://github.com/bdice)
- Use the new JSON parser when the experimental reader is selected ([#11364](https://github.com/rapidsai/cudf/pull/11364)) [@vuule](https://github.com/vuule)
- Remove deprecated Series.applymap. ([#11031](https://github.com/rapidsai/cudf/pull/11031)) [@bdice](https://github.com/bdice)
- Remove deprecated expand parameter from str.findall. ([#11030](https://github.com/rapidsai/cudf/pull/11030)) [@bdice](https://github.com/bdice)
## 🐛 Bug Fixes
- Fixes bug in temporary decompression space estimation before calling nvcomp ([#11879](https://github.com/rapidsai/cudf/pull/11879)) [@abellina](https://github.com/abellina)
- Handle `ptx` file paths during `strings_udf` import ([#11862](https://github.com/rapidsai/cudf/pull/11862)) [@galipremsagar](https://github.com/galipremsagar)
- Disable Zstandard decompression on nvCOMP 2.4 and Pascal GPus ([#11856](https://github.com/rapidsai/cudf/pull/11856)) [@vuule](https://github.com/vuule)
- Reset `strings_udf` CEC and solve several related issues ([#11846](https://github.com/rapidsai/cudf/pull/11846)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Fix bug in new shuffle-based groupby implementation ([#11836](https://github.com/rapidsai/cudf/pull/11836)) [@rjzamora](https://github.com/rjzamora)
- Fix `is_valid` checks in `Scalar._binaryop` ([#11818](https://github.com/rapidsai/cudf/pull/11818)) [@wence-](https://github.com/wence-)
- Fix operator `NotImplemented` issue with `numpy` ([#11816](https://github.com/rapidsai/cudf/pull/11816)) [@galipremsagar](https://github.com/galipremsagar)
- Disable nvCOMP DEFLATE integration ([#11811](https://github.com/rapidsai/cudf/pull/11811)) [@vuule](https://github.com/vuule)
- Build `strings_udf` package with other python packages in nightlies ([#11808](https://github.com/rapidsai/cudf/pull/11808)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Revert problematic shuffle=explicit-comms changes ([#11803](https://github.com/rapidsai/cudf/pull/11803)) [@rjzamora](https://github.com/rjzamora)
- Fix regex out-of-bounds write in strided rows logic ([#11797](https://github.com/rapidsai/cudf/pull/11797)) [@davidwendt](https://github.com/davidwendt)
- Build `cudf` locally before building `strings_udf` conda packages in CI ([#11785](https://github.com/rapidsai/cudf/pull/11785)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Fix an issue in cudf::row_bit_count involving structs and lists at multiple levels. ([#11779](https://github.com/rapidsai/cudf/pull/11779)) [@nvdbaranec](https://github.com/nvdbaranec)
- Fix return type of `Index.isna` & `Index.notna` ([#11769](https://github.com/rapidsai/cudf/pull/11769)) [@galipremsagar](https://github.com/galipremsagar)
- Fix issue with set-item in case of `list` and `struct` types ([#11760](https://github.com/rapidsai/cudf/pull/11760)) [@galipremsagar](https://github.com/galipremsagar)
- Ensure all libcudf APIs run on cudf's default stream ([#11759](https://github.com/rapidsai/cudf/pull/11759)) [@vyasr](https://github.com/vyasr)
- Resolve dask_cudf failures caused by upstream groupby changes ([#11755](https://github.com/rapidsai/cudf/pull/11755)) [@rjzamora](https://github.com/rjzamora)
- Fix ORC string sum statistics ([#11740](https://github.com/rapidsai/cudf/pull/11740)) [@vuule](https://github.com/vuule)
- Add `strings_udf` package for python 3.9 ([#11730](https://github.com/rapidsai/cudf/pull/11730)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Ensure that all tests launch kernels on cudf's default stream ([#11726](https://github.com/rapidsai/cudf/pull/11726)) [@vyasr](https://github.com/vyasr)
- Don't assume stream is a compile-time constant expression ([#11725](https://github.com/rapidsai/cudf/pull/11725)) [@vyasr](https://github.com/vyasr)
- Fix get_thrust.cmake format at patch command ([#11715](https://github.com/rapidsai/cudf/pull/11715)) [@davidwendt](https://github.com/davidwendt)
- Fix `cudf::partition*` APIs that do not return offsets for empty output table ([#11709](https://github.com/rapidsai/cudf/pull/11709)) [@ttnghia](https://github.com/ttnghia)
- Fix cudf::lists::sort_lists for NaN and Infinity values ([#11703](https://github.com/rapidsai/cudf/pull/11703)) [@davidwendt](https://github.com/davidwendt)
- Modify ORC reader timestamp parsing to match the apache reader behavior ([#11699](https://github.com/rapidsai/cudf/pull/11699)) [@vuule](https://github.com/vuule)
- Fix `DataFrame.from_arrow` to preserve type metadata ([#11698](https://github.com/rapidsai/cudf/pull/11698)) [@galipremsagar](https://github.com/galipremsagar)
- Fix compile error due to missing header ([#11697](https://github.com/rapidsai/cudf/pull/11697)) [@ttnghia](https://github.com/ttnghia)
- Default to Snappy compression in `to_orc` when using cuDF or Dask ([#11690](https://github.com/rapidsai/cudf/pull/11690)) [@vuule](https://github.com/vuule)
- Fix an issue related to `Multindex` when `group_keys=True` ([#11689](https://github.com/rapidsai/cudf/pull/11689)) [@galipremsagar](https://github.com/galipremsagar)
- Transfer correct dtype to exploded column ([#11687](https://github.com/rapidsai/cudf/pull/11687)) [@wence-](https://github.com/wence-)
- Ignore protobuf generated files in `mypy` checks ([#11685](https://github.com/rapidsai/cudf/pull/11685)) [@galipremsagar](https://github.com/galipremsagar)
- Maintain the index name after `.loc` ([#11677](https://github.com/rapidsai/cudf/pull/11677)) [@shwina](https://github.com/shwina)
- Fix issue with extracting nested column data & dtype preservation ([#11671](https://github.com/rapidsai/cudf/pull/11671)) [@galipremsagar](https://github.com/galipremsagar)
- Ensure that all cudf tests and benchmarks are conda env aware ([#11666](https://github.com/rapidsai/cudf/pull/11666)) [@robertmaynard](https://github.com/robertmaynard)
- Update to Thrust 1.17.2 to fix cub ODR issues ([#11665](https://github.com/rapidsai/cudf/pull/11665)) [@robertmaynard](https://github.com/robertmaynard)
- Fix multi-file remote datasource bug ([#11655](https://github.com/rapidsai/cudf/pull/11655)) [@rjzamora](https://github.com/rjzamora)
- Fix invalid regex quantifier check to not include alternation ([#11654](https://github.com/rapidsai/cudf/pull/11654)) [@davidwendt](https://github.com/davidwendt)
- Fix bug in `device_write()`: it uses an incorrect size ([#11651](https://github.com/rapidsai/cudf/pull/11651)) [@madsbk](https://github.com/madsbk)
- fixes overflows in benchmarks ([#11649](https://github.com/rapidsai/cudf/pull/11649)) [@elstehle](https://github.com/elstehle)
- Fix regex negated classes to not automatically include new-lines ([#11644](https://github.com/rapidsai/cudf/pull/11644)) [@davidwendt](https://github.com/davidwendt)
- Fix compile error in benchmark nested_json.cpp ([#11637](https://github.com/rapidsai/cudf/pull/11637)) [@davidwendt](https://github.com/davidwendt)
- Update zfill to match Python output ([#11634](https://github.com/rapidsai/cudf/pull/11634)) [@davidwendt](https://github.com/davidwendt)
- Removed converted type for INT32 and INT64 since they do not convert ([#11627](https://github.com/rapidsai/cudf/pull/11627)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Fix host scalars construction of nested types ([#11612](https://github.com/rapidsai/cudf/pull/11612)) [@galipremsagar](https://github.com/galipremsagar)
- Fix compile warning in nested_json_gpu.cu ([#11607](https://github.com/rapidsai/cudf/pull/11607)) [@davidwendt](https://github.com/davidwendt)
- Change default value of `ordered` to `False` in `CategoricalDtype` ([#11604](https://github.com/rapidsai/cudf/pull/11604)) [@galipremsagar](https://github.com/galipremsagar)
- Preserve order if necessary when deduping categoricals internally ([#11597](https://github.com/rapidsai/cudf/pull/11597)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Add is_timestamp test for leap second (60) ([#11594](https://github.com/rapidsai/cudf/pull/11594)) [@davidwendt](https://github.com/davidwendt)
- Fix an issue with `to_arrow` when column name type is not a string ([#11590](https://github.com/rapidsai/cudf/pull/11590)) [@galipremsagar](https://github.com/galipremsagar)
- Fix exception in segmented-reduce benchmark ([#11588](https://github.com/rapidsai/cudf/pull/11588)) [@davidwendt](https://github.com/davidwendt)
- Fix encode/decode of negative timestamps in ORC reader/writer ([#11586](https://github.com/rapidsai/cudf/pull/11586)) [@vuule](https://github.com/vuule)
- Correct distribution data type in `quantiles` benchmark ([#11584](https://github.com/rapidsai/cudf/pull/11584)) [@vuule](https://github.com/vuule)
- Fix multibyte_split benchmark for host buffers ([#11583](https://github.com/rapidsai/cudf/pull/11583)) [@upsj](https://github.com/upsj)
- xfail custreamz display test for now ([#11567](https://github.com/rapidsai/cudf/pull/11567)) [@shwina](https://github.com/shwina)
- Fix JNI for TableWithMeta to use schema_info instead of column_names ([#11566](https://github.com/rapidsai/cudf/pull/11566)) [@jlowe](https://github.com/jlowe)
- Reduce code duplication for `dask` & `distributed` nightly/stable installs ([#11565](https://github.com/rapidsai/cudf/pull/11565)) [@galipremsagar](https://github.com/galipremsagar)
- Fix groupby failures in dask_cudf CI ([#11561](https://github.com/rapidsai/cudf/pull/11561)) [@rjzamora](https://github.com/rjzamora)
- Fix for pivot: error when 'values' is a multicharacter string ([#11538](https://github.com/rapidsai/cudf/pull/11538)) [@shaswat-indian](https://github.com/shaswat-indian)
- find_package(cudf) + arrow9 usable with cudf build directory ([#11535](https://github.com/rapidsai/cudf/pull/11535)) [@robertmaynard](https://github.com/robertmaynard)
- Fixing crash when writing binary nested data in parquet ([#11526](https://github.com/rapidsai/cudf/pull/11526)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Fix for: error when assigning a value to an empty series ([#11523](https://github.com/rapidsai/cudf/pull/11523)) [@shaswat-indian](https://github.com/shaswat-indian)
- Fix invalid results from conditional-left-anti-join in debug build ([#11517](https://github.com/rapidsai/cudf/pull/11517)) [@davidwendt](https://github.com/davidwendt)
- Fix cmake error after upgrading to Arrow 9 ([#11513](https://github.com/rapidsai/cudf/pull/11513)) [@ttnghia](https://github.com/ttnghia)
- Fix reverse binary operators acting on a host value and cudf.Scalar ([#11512](https://github.com/rapidsai/cudf/pull/11512)) [@bdice](https://github.com/bdice)
- Update parquet fuzz tests to drop support for `skiprows` & `num_rows` ([#11505](https://github.com/rapidsai/cudf/pull/11505)) [@galipremsagar](https://github.com/galipremsagar)
- Use rapids-cmake 22.10 best practice for RAPIDS.cmake location ([#11493](https://github.com/rapidsai/cudf/pull/11493)) [@robertmaynard](https://github.com/robertmaynard)
- Handle some zero-sized corner cases in dlpack interop ([#11449](https://github.com/rapidsai/cudf/pull/11449)) [@wence-](https://github.com/wence-)
- Return empty dataframe when reading an ORC file using empty `columns` option ([#11446](https://github.com/rapidsai/cudf/pull/11446)) [@vuule](https://github.com/vuule)
- libcudf c++ example updated to CPM version 0.35.3 ([#11417](https://github.com/rapidsai/cudf/pull/11417)) [@robertmaynard](https://github.com/robertmaynard)
- Fix regex quantifier check to include capture groups ([#11373](https://github.com/rapidsai/cudf/pull/11373)) [@davidwendt](https://github.com/davidwendt)
- Fix read_text when byte_range is aligned with field ([#11371](https://github.com/rapidsai/cudf/pull/11371)) [@upsj](https://github.com/upsj)
- Fix to_timestamps truncated subsecond calculation ([#11367](https://github.com/rapidsai/cudf/pull/11367)) [@davidwendt](https://github.com/davidwendt)
- column: calculate null_count before release()ing the cudf::column ([#11365](https://github.com/rapidsai/cudf/pull/11365)) [@wence-](https://github.com/wence-)
## 📖 Documentation
- Update `guide-to-udfs` notebook ([#11861](https://github.com/rapidsai/cudf/pull/11861)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Update docstring for cudf.read_text ([#11799](https://github.com/rapidsai/cudf/pull/11799)) [@GregoryKimball](https://github.com/GregoryKimball)
- Add doc section for `list` & `struct` handling ([#11770](https://github.com/rapidsai/cudf/pull/11770)) [@galipremsagar](https://github.com/galipremsagar)
- Document that minimum required CMake version is now 3.23.1 ([#11751](https://github.com/rapidsai/cudf/pull/11751)) [@robertmaynard](https://github.com/robertmaynard)
- Update libcudf documentation build command in DOCUMENTATION.md ([#11735](https://github.com/rapidsai/cudf/pull/11735)) [@davidwendt](https://github.com/davidwendt)
- Add docs for use of string data to `DataFrame.apply` and `Series.apply` and update guide to UDFs notebook ([#11733](https://github.com/rapidsai/cudf/pull/11733)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Enable more Pydocstyle rules ([#11582](https://github.com/rapidsai/cudf/pull/11582)) [@bdice](https://github.com/bdice)
- Remove unused cpp/img folder ([#11554](https://github.com/rapidsai/cudf/pull/11554)) [@davidwendt](https://github.com/davidwendt)
- Publish C++ developer docs ([#11475](https://github.com/rapidsai/cudf/pull/11475)) [@vyasr](https://github.com/vyasr)
- Fix a misalignment in `cudf.get_dummies` docstring ([#11443](https://github.com/rapidsai/cudf/pull/11443)) [@galipremsagar](https://github.com/galipremsagar)
- Update contributing doc to include links to the developer guides ([#11390](https://github.com/rapidsai/cudf/pull/11390)) [@davidwendt](https://github.com/davidwendt)
- Fix table_view_base doxygen format ([#11340](https://github.com/rapidsai/cudf/pull/11340)) [@davidwendt](https://github.com/davidwendt)
- Create main developer guide for Python ([#11235](https://github.com/rapidsai/cudf/pull/11235)) [@vyasr](https://github.com/vyasr)
- Add developer documentation for benchmarking ([#11122](https://github.com/rapidsai/cudf/pull/11122)) [@vyasr](https://github.com/vyasr)
- cuDF error handling document ([#7917](https://github.com/rapidsai/cudf/pull/7917)) [@isVoid](https://github.com/isVoid)
## 🚀 New Features
- Add hasNull statistic reading ability to ORC ([#11747](https://github.com/rapidsai/cudf/pull/11747)) [@devavret](https://github.com/devavret)
- Add `istitle` to string UDFs ([#11738](https://github.com/rapidsai/cudf/pull/11738)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- JSON Column creation in GPU ([#11714](https://github.com/rapidsai/cudf/pull/11714)) [@karthikeyann](https://github.com/karthikeyann)
- Adds option to take explicit nested schema for nested JSON reader ([#11682](https://github.com/rapidsai/cudf/pull/11682)) [@elstehle](https://github.com/elstehle)
- Add BGZIP `data_chunk_reader` ([#11652](https://github.com/rapidsai/cudf/pull/11652)) [@upsj](https://github.com/upsj)
- Support DECIMAL order-by for RANGE window functions ([#11645](https://github.com/rapidsai/cudf/pull/11645)) [@mythrocks](https://github.com/mythrocks)
- changing version of cmake to 3.23.3 ([#11619](https://github.com/rapidsai/cudf/pull/11619)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Generate unique keys table in java JNI `contiguousSplitGroups` ([#11614](https://github.com/rapidsai/cudf/pull/11614)) [@res-life](https://github.com/res-life)
- Generic type casting to support the new nested JSON reader ([#11613](https://github.com/rapidsai/cudf/pull/11613)) [@elstehle](https://github.com/elstehle)
- JSON tree traversal ([#11610](https://github.com/rapidsai/cudf/pull/11610)) [@karthikeyann](https://github.com/karthikeyann)
- Add casting operators to masked UDFs ([#11578](https://github.com/rapidsai/cudf/pull/11578)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Adds type inference and type conversion for leaf-columns to the nested JSON parser ([#11574](https://github.com/rapidsai/cudf/pull/11574)) [@elstehle](https://github.com/elstehle)
- Add strings 'like' function ([#11558](https://github.com/rapidsai/cudf/pull/11558)) [@davidwendt](https://github.com/davidwendt)
- Handle hyphen as literal for regex cclass when incomplete range ([#11557](https://github.com/rapidsai/cudf/pull/11557)) [@davidwendt](https://github.com/davidwendt)
- Enable ZSTD compression in ORC and Parquet writers ([#11551](https://github.com/rapidsai/cudf/pull/11551)) [@vuule](https://github.com/vuule)
- Adds support for json lines format to the nested JSON reader ([#11534](https://github.com/rapidsai/cudf/pull/11534)) [@elstehle](https://github.com/elstehle)
- Adding optional parquet reader schema ([#11524](https://github.com/rapidsai/cudf/pull/11524)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Adds GPU implementation of JSON-token-stream to JSON-tree ([#11518](https://github.com/rapidsai/cudf/pull/11518)) [@karthikeyann](https://github.com/karthikeyann)
- Add `gdb` pretty-printers for simple types ([#11499](https://github.com/rapidsai/cudf/pull/11499)) [@upsj](https://github.com/upsj)
- Add `create_random_column` function to the data generator ([#11490](https://github.com/rapidsai/cudf/pull/11490)) [@vuule](https://github.com/vuule)
- Add fluent API builder to `data_profile` ([#11479](https://github.com/rapidsai/cudf/pull/11479)) [@vuule](https://github.com/vuule)
- Adds Nested Json benchmark ([#11466](https://github.com/rapidsai/cudf/pull/11466)) [@karthikeyann](https://github.com/karthikeyann)
- Convert thrust::optional usages to std::optional ([#11455](https://github.com/rapidsai/cudf/pull/11455)) [@robertmaynard](https://github.com/robertmaynard)
- Python API for the future experimental JSON reader ([#11426](https://github.com/rapidsai/cudf/pull/11426)) [@vuule](https://github.com/vuule)
- Return schema info from JSON reader ([#11419](https://github.com/rapidsai/cudf/pull/11419)) [@vuule](https://github.com/vuule)
- Add regex ASCII flag support for matching builtin character classes ([#11404](https://github.com/rapidsai/cudf/pull/11404)) [@davidwendt](https://github.com/davidwendt)
- Truncate parquet column indexes ([#11403](https://github.com/rapidsai/cudf/pull/11403)) [@etseidl](https://github.com/etseidl)
- Adds the end-to-end JSON parser implementation ([#11388](https://github.com/rapidsai/cudf/pull/11388)) [@elstehle](https://github.com/elstehle)
- Use the new JSON parser when the experimental reader is selected ([#11364](https://github.com/rapidsai/cudf/pull/11364)) [@vuule](https://github.com/vuule)
- Add placeholder for the experimental JSON reader ([#11334](https://github.com/rapidsai/cudf/pull/11334)) [@vuule](https://github.com/vuule)
- Add read-only functions on string dtypes to `DataFrame.apply` and `Series.apply` ([#11319](https://github.com/rapidsai/cudf/pull/11319)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Added 'crosstab' and 'pivot_table' features ([#11314](https://github.com/rapidsai/cudf/pull/11314)) [@shaswat-indian](https://github.com/shaswat-indian)
- Quickly error out when trying to build with unsupported nvcc versions ([#11297](https://github.com/rapidsai/cudf/pull/11297)) [@robertmaynard](https://github.com/robertmaynard)
- Adds JSON tokenizer ([#11264](https://github.com/rapidsai/cudf/pull/11264)) [@elstehle](https://github.com/elstehle)
- List lexicographic comparator ([#11129](https://github.com/rapidsai/cudf/pull/11129)) [@devavret](https://github.com/devavret)
- Add generic type inference for cuIO ([#11121](https://github.com/rapidsai/cudf/pull/11121)) [@PointKernel](https://github.com/PointKernel)
- Fully support nested types in `cudf::contains` ([#10656](https://github.com/rapidsai/cudf/pull/10656)) [@ttnghia](https://github.com/ttnghia)
- Support nested types in `lists::contains` ([#10548](https://github.com/rapidsai/cudf/pull/10548)) [@ttnghia](https://github.com/ttnghia)
## 🛠️ Improvements
- Pin `dask` and `distributed` for release ([#11822](https://github.com/rapidsai/cudf/pull/11822)) [@galipremsagar](https://github.com/galipremsagar)
- Add examples for Nested JSON reader ([#11814](https://github.com/rapidsai/cudf/pull/11814)) [@GregoryKimball](https://github.com/GregoryKimball)
- Support shuffle-based groupby aggregations in dask_cudf ([#11800](https://github.com/rapidsai/cudf/pull/11800)) [@rjzamora](https://github.com/rjzamora)
- Update strings udf version updater script ([#11772](https://github.com/rapidsai/cudf/pull/11772)) [@galipremsagar](https://github.com/galipremsagar)
- Remove `kwargs` in `read_csv` & `to_csv` ([#11762](https://github.com/rapidsai/cudf/pull/11762)) [@galipremsagar](https://github.com/galipremsagar)
- Pass `dtype` param to avoid `pd.Series` warnings ([#11761](https://github.com/rapidsai/cudf/pull/11761)) [@galipremsagar](https://github.com/galipremsagar)
- Enable `schema_element` & `keep_quotes` support in json reader ([#11746](https://github.com/rapidsai/cudf/pull/11746)) [@galipremsagar](https://github.com/galipremsagar)
- Add ability to construct `ListColumn` when size is `None` ([#11745](https://github.com/rapidsai/cudf/pull/11745)) [@galipremsagar](https://github.com/galipremsagar)
- Reduces memory requirements in JSON parser and adds bytes/s and peak memory usage to benchmarks ([#11732](https://github.com/rapidsai/cudf/pull/11732)) [@elstehle](https://github.com/elstehle)
- Add missing copyright headers. ([#11712](https://github.com/rapidsai/cudf/pull/11712)) [@bdice](https://github.com/bdice)
- Fix copyright check issues in pre-commit ([#11711](https://github.com/rapidsai/cudf/pull/11711)) [@bdice](https://github.com/bdice)
- Include decimal in supported types for range window order-by columns ([#11710](https://github.com/rapidsai/cudf/pull/11710)) [@mythrocks](https://github.com/mythrocks)
- Disable very large column gtest for contiguous-split ([#11706](https://github.com/rapidsai/cudf/pull/11706)) [@davidwendt](https://github.com/davidwendt)
- Drop split_out=None test from groupby.agg ([#11704](https://github.com/rapidsai/cudf/pull/11704)) [@wence-](https://github.com/wence-)
- Use CubinLinker for CUDA Minor Version Compatibility ([#11701](https://github.com/rapidsai/cudf/pull/11701)) [@gmarkall](https://github.com/gmarkall)
- Add regex capture-group parameter to auto convert to non-capture groups ([#11695](https://github.com/rapidsai/cudf/pull/11695)) [@davidwendt](https://github.com/davidwendt)
- Add a `__dataframe__` method to the protocol dataframe object ([#11692](https://github.com/rapidsai/cudf/pull/11692)) [@rgommers](https://github.com/rgommers)
- Special-case multibyte_split for single-byte delimiter ([#11681](https://github.com/rapidsai/cudf/pull/11681)) [@upsj](https://github.com/upsj)
- Remove isort exclusions ([#11680](https://github.com/rapidsai/cudf/pull/11680)) [@bdice](https://github.com/bdice)
- Refactor CSV reader benchmarks with nvbench ([#11678](https://github.com/rapidsai/cudf/pull/11678)) [@PointKernel](https://github.com/PointKernel)
- Check conda recipe headers with pre-commit ([#11669](https://github.com/rapidsai/cudf/pull/11669)) [@bdice](https://github.com/bdice)
- Remove redundant style check for clang-format. ([#11668](https://github.com/rapidsai/cudf/pull/11668)) [@bdice](https://github.com/bdice)
- Add support for `group_keys` in `groupby` ([#11659](https://github.com/rapidsai/cudf/pull/11659)) [@galipremsagar](https://github.com/galipremsagar)
- Fix pandoc pinning. ([#11658](https://github.com/rapidsai/cudf/pull/11658)) [@bdice](https://github.com/bdice)
- Revert removal of skip_rows / num_rows options from the Parquet reader. ([#11657](https://github.com/rapidsai/cudf/pull/11657)) [@nvdbaranec](https://github.com/nvdbaranec)
- Update git metadata ([#11647](https://github.com/rapidsai/cudf/pull/11647)) [@bdice](https://github.com/bdice)
- Call set_null_count on a returning column if null-count is known ([#11646](https://github.com/rapidsai/cudf/pull/11646)) [@davidwendt](https://github.com/davidwendt)
- Fix some libcudf detail calls not passing the stream variable ([#11642](https://github.com/rapidsai/cudf/pull/11642)) [@davidwendt](https://github.com/davidwendt)
- Update to mypy 0.971 ([#11640](https://github.com/rapidsai/cudf/pull/11640)) [@wence-](https://github.com/wence-)
- Refactor strings strip functor to details header ([#11635](https://github.com/rapidsai/cudf/pull/11635)) [@davidwendt](https://github.com/davidwendt)
- Fix incorrect `nullCount` in `get_json_object` ([#11633](https://github.com/rapidsai/cudf/pull/11633)) [@trxcllnt](https://github.com/trxcllnt)
- Simplify `hostdevice_vector` ([#11631](https://github.com/rapidsai/cudf/pull/11631)) [@upsj](https://github.com/upsj)
- Refactor parquet writer benchmarks with nvbench ([#11623](https://github.com/rapidsai/cudf/pull/11623)) [@PointKernel](https://github.com/PointKernel)
- Rework contains_scalar to check nulls at runtime ([#11622](https://github.com/rapidsai/cudf/pull/11622)) [@davidwendt](https://github.com/davidwendt)
- Fix incorrect memory resource used in rolling temp columns ([#11618](https://github.com/rapidsai/cudf/pull/11618)) [@mythrocks](https://github.com/mythrocks)
- Upgrade `pandas` to `1.5` ([#11617](https://github.com/rapidsai/cudf/pull/11617)) [@galipremsagar](https://github.com/galipremsagar)
- Move type-dispatcher calls from traits.hpp to traits.cpp ([#11616](https://github.com/rapidsai/cudf/pull/11616)) [@davidwendt](https://github.com/davidwendt)
- Refactor parquet reader benchmarks with nvbench ([#11611](https://github.com/rapidsai/cudf/pull/11611)) [@PointKernel](https://github.com/PointKernel)
- Forward-merge branch-22.08 to branch-22.10 ([#11608](https://github.com/rapidsai/cudf/pull/11608)) [@bdice](https://github.com/bdice)
- Use stream in Java API. ([#11601](https://github.com/rapidsai/cudf/pull/11601)) [@bdice](https://github.com/bdice)
- Refactors of public/detail APIs, CUDF_FUNC_RANGE, stream handling. ([#11600](https://github.com/rapidsai/cudf/pull/11600)) [@bdice](https://github.com/bdice)
- Improve ORC writer benchmark with nvbench ([#11598](https://github.com/rapidsai/cudf/pull/11598)) [@PointKernel](https://github.com/PointKernel)
- Tune multibyte_split kernel ([#11587](https://github.com/rapidsai/cudf/pull/11587)) [@upsj](https://github.com/upsj)
- Move split_utils.cuh to strings/detail ([#11585](https://github.com/rapidsai/cudf/pull/11585)) [@davidwendt](https://github.com/davidwendt)
- Fix warnings due to compiler regression with `if constexpr` ([#11581](https://github.com/rapidsai/cudf/pull/11581)) [@ttnghia](https://github.com/ttnghia)
- Add full 24-bit dictionary support to Parquet writer ([#11580](https://github.com/rapidsai/cudf/pull/11580)) [@etseidl](https://github.com/etseidl)
- Expose "explicit-comms" option in shuffle-based dask_cudf functions ([#11576](https://github.com/rapidsai/cudf/pull/11576)) [@rjzamora](https://github.com/rjzamora)
- Move cudf::strings::findall_record to cudf::strings::findall ([#11575](https://github.com/rapidsai/cudf/pull/11575)) [@davidwendt](https://github.com/davidwendt)
- Refactor dask_cudf groupby to use apply_concat_apply ([#11571](https://github.com/rapidsai/cudf/pull/11571)) [@rjzamora](https://github.com/rjzamora)
- Add ability to write `list(struct)` columns as `map` type in orc writer ([#11568](https://github.com/rapidsai/cudf/pull/11568)) [@galipremsagar](https://github.com/galipremsagar)
- Add byte_range to multibyte_split benchmark + NVBench refactor ([#11562](https://github.com/rapidsai/cudf/pull/11562)) [@upsj](https://github.com/upsj)
- JNI support for writing binary columns in parquet ([#11556](https://github.com/rapidsai/cudf/pull/11556)) [@revans2](https://github.com/revans2)
- Support additional dictionary bit widths in Parquet writer ([#11547](https://github.com/rapidsai/cudf/pull/11547)) [@etseidl](https://github.com/etseidl)
- Refactor string/numeric conversion utilities ([#11545](https://github.com/rapidsai/cudf/pull/11545)) [@davidwendt](https://github.com/davidwendt)
- Removing unnecessary asserts in parquet tests ([#11544](https://github.com/rapidsai/cudf/pull/11544)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Clean up ORC reader benchmarks with NVBench ([#11543](https://github.com/rapidsai/cudf/pull/11543)) [@PointKernel](https://github.com/PointKernel)
- Reuse MurmurHash3_32 in Parquet page data. ([#11528](https://github.com/rapidsai/cudf/pull/11528)) [@bdice](https://github.com/bdice)
- Add hexadecimal value separators ([#11527](https://github.com/rapidsai/cudf/pull/11527)) [@bdice](https://github.com/bdice)
- Deprecate `skiprows` and `num_rows` in `read_orc` ([#11522](https://github.com/rapidsai/cudf/pull/11522)) [@galipremsagar](https://github.com/galipremsagar)
- Struct support for `NULL_EQUALS` binary operation ([#11520](https://github.com/rapidsai/cudf/pull/11520)) [@rwlee](https://github.com/rwlee)
- Bump hadoop-common from 3.2.3 to 3.2.4 in /java ([#11516](https://github.com/rapidsai/cudf/pull/11516)) [@dependabot[bot]](https://github.com/dependabot[bot])
- Fix Feather test warning. ([#11511](https://github.com/rapidsai/cudf/pull/11511)) [@bdice](https://github.com/bdice)
- copy_range ballot_syncs to have no execution dependency ([#11508](https://github.com/rapidsai/cudf/pull/11508)) [@robertmaynard](https://github.com/robertmaynard)
- Upgrade to `arrow-9.x` ([#11507](https://github.com/rapidsai/cudf/pull/11507)) [@galipremsagar](https://github.com/galipremsagar)
- Remove support for skip_rows / num_rows options in the parquet reader. ([#11503](https://github.com/rapidsai/cudf/pull/11503)) [@nvdbaranec](https://github.com/nvdbaranec)
- Single-pass `multibyte_split` ([#11500](https://github.com/rapidsai/cudf/pull/11500)) [@upsj](https://github.com/upsj)
- Sanitize percentile_approx() output for empty input ([#11498](https://github.com/rapidsai/cudf/pull/11498)) [@SrikarVanavasam](https://github.com/SrikarVanavasam)
- Unpin `dask` and `distributed` for development ([#11492](https://github.com/rapidsai/cudf/pull/11492)) [@galipremsagar](https://github.com/galipremsagar)
- Move SparkMurmurHash3_32 functor. ([#11489](https://github.com/rapidsai/cudf/pull/11489)) [@bdice](https://github.com/bdice)
- Refactor group_nunique.cu to use nullate::DYNAMIC for reduce-by-key functor ([#11482](https://github.com/rapidsai/cudf/pull/11482)) [@davidwendt](https://github.com/davidwendt)
- Drop support for `skiprows` and `num_rows` in `cudf.read_parquet` ([#11480](https://github.com/rapidsai/cudf/pull/11480)) [@galipremsagar](https://github.com/galipremsagar)
- Add reduction `distinct_count` benchmark ([#11473](https://github.com/rapidsai/cudf/pull/11473)) [@ttnghia](https://github.com/ttnghia)
- Add groupby `nunique` aggregation benchmark ([#11472](https://github.com/rapidsai/cudf/pull/11472)) [@ttnghia](https://github.com/ttnghia)
- Disable Arrow S3 support by default. ([#11470](https://github.com/rapidsai/cudf/pull/11470)) [@bdice](https://github.com/bdice)
- Add groupby `max` aggregation benchmark ([#11464](https://github.com/rapidsai/cudf/pull/11464)) [@ttnghia](https://github.com/ttnghia)
- Extract Dremel encoding code from Parquet ([#11461](https://github.com/rapidsai/cudf/pull/11461)) [@vyasr](https://github.com/vyasr)
- Add missing Thrust #includes. ([#11457](https://github.com/rapidsai/cudf/pull/11457)) [@bdice](https://github.com/bdice)
- Make CMake hooks verbose ([#11456](https://github.com/rapidsai/cudf/pull/11456)) [@vyasr](https://github.com/vyasr)
- Control Parquet page size through Python API ([#11454](https://github.com/rapidsai/cudf/pull/11454)) [@etseidl](https://github.com/etseidl)
- Add control of Parquet column index creation to python ([#11453](https://github.com/rapidsai/cudf/pull/11453)) [@etseidl](https://github.com/etseidl)
- Remove unused is_struct trait. ([#11450](https://github.com/rapidsai/cudf/pull/11450)) [@bdice](https://github.com/bdice)
- Refactor the `Buffer` class ([#11447](https://github.com/rapidsai/cudf/pull/11447)) [@madsbk](https://github.com/madsbk)
- Refactor pad_side and strip_type enums into side_type enum ([#11438](https://github.com/rapidsai/cudf/pull/11438)) [@davidwendt](https://github.com/davidwendt)
- Update to Thrust 1.17.0 ([#11437](https://github.com/rapidsai/cudf/pull/11437)) [@bdice](https://github.com/bdice)
- Add in JNI for parsing JSON data and getting the metadata back too. ([#11431](https://github.com/rapidsai/cudf/pull/11431)) [@revans2](https://github.com/revans2)
- Convert byte_array_view to use std::byte ([#11424](https://github.com/rapidsai/cudf/pull/11424)) [@hyperbolic2346](https://github.com/hyperbolic2346)
- Deprecate unflatten_nested_columns ([#11421](https://github.com/rapidsai/cudf/pull/11421)) [@SrikarVanavasam](https://github.com/SrikarVanavasam)
- Remove HASH_SERIAL_MURMUR3 / serial32BitMurmurHash3 ([#11383](https://github.com/rapidsai/cudf/pull/11383)) [@bdice](https://github.com/bdice)
- Add Spark list hashing Java tests ([#11379](https://github.com/rapidsai/cudf/pull/11379)) [@bdice](https://github.com/bdice)
- Move cmake to the build section. ([#11376](https://github.com/rapidsai/cudf/pull/11376)) [@vyasr](https://github.com/vyasr)
- Remove use of CUDA driver API calls from libcudf ([#11370](https://github.com/rapidsai/cudf/pull/11370)) [@shwina](https://github.com/shwina)
- Add column constructor from device_uvector&& ([#11356](https://github.com/rapidsai/cudf/pull/11356)) [@SrikarVanavasam](https://github.com/SrikarVanavasam)
- Remove unused custreamz thirdparty directory ([#11343](https://github.com/rapidsai/cudf/pull/11343)) [@vyasr](https://github.com/vyasr)
- Update jni version to 22.10.0-SNAPSHOT ([#11338](https://github.com/rapidsai/cudf/pull/11338)) [@pxLi](https://github.com/pxLi)
- Enable using upstream jitify2 ([#11287](https://github.com/rapidsai/cudf/pull/11287)) [@shwina](https://github.com/shwina)
- Cache cudf.Scalar ([#11246](https://github.com/rapidsai/cudf/pull/11246)) [@shwina](https://github.com/shwina)
- Remove deprecated Series.applymap. ([#11031](https://github.com/rapidsai/cudf/pull/11031)) [@bdice](https://github.com/bdice)
- Remove deprecated expand parameter from str.findall. ([#11030](https://github.com/rapidsai/cudf/pull/11030)) [@bdice](https://github.com/bdice)
# cuDF 22.08.00 (17 Aug 2022)
## 🚨 Breaking Changes
- Remove legacy join APIs ([#11274](https://github.com/rapidsai/cudf/pull/11274)) [@vyasr](https://github.com/vyasr)
- Remove `lists::drop_list_duplicates` ([#11236](https://github.com/rapidsai/cudf/pull/11236)) [@ttnghia](https://github.com/ttnghia)
- Remove Index.replace API ([#11131](https://github.com/rapidsai/cudf/pull/11131)) [@vyasr](https://github.com/vyasr)
- Remove deprecated Index methods from Frame ([#11073](https://github.com/rapidsai/cudf/pull/11073)) [@vyasr](https://github.com/vyasr)
- Remove public API of cudf.merge_sorted. ([#11032](https://github.com/rapidsai/cudf/pull/11032)) [@bdice](https://github.com/bdice)
- Drop python `3.7` in code-base ([#11029](https://github.com/rapidsai/cudf/pull/11029)) [@galipremsagar](https://github.com/galipremsagar)
- Return empty dataframe when reading a Parquet file using empty `columns` option ([#11018](https://github.com/rapidsai/cudf/pull/11018)) [@vuule](https://github.com/vuule)
- Remove Arrow CUDA IPC code ([#10995](https://github.com/rapidsai/cudf/pull/10995)) [@shwina](https://github.com/shwina)
- Buffer: make `.ptr` read-only ([#10872](https://github.com/rapidsai/cudf/pull/10872)) [@madsbk](https://github.com/madsbk)
## 🐛 Bug Fixes
- Fix `distributed` error related to `loop_in_thread` ([#11428](https://github.com/rapidsai/cudf/pull/11428)) [@galipremsagar](https://github.com/galipremsagar)
- Relax arrow pinning to just 8.x and remove cuda build dependency from cudf recipe ([#11412](https://github.com/rapidsai/cudf/pull/11412)) [@kkraus14](https://github.com/kkraus14)
- Revert "Allow CuPy 11" ([#11409](https://github.com/rapidsai/cudf/pull/11409)) [@jakirkham](https://github.com/jakirkham)
- Fix `moto` timeouts ([#11369](https://github.com/rapidsai/cudf/pull/11369)) [@galipremsagar](https://github.com/galipremsagar)
- Set `+/-infinity` as the `identity` values for floating-point numbers in device operators `min` and `max` ([#11357](https://github.com/rapidsai/cudf/pull/11357)) [@ttnghia](https://github.com/ttnghia)
- Fix memory_usage() for `ListSeries` ([#11355](https://github.com/rapidsai/cudf/pull/11355)) [@thomcom](https://github.com/thomcom)
- Fix constructing Column from column_view with expired mask ([#11354](https://github.com/rapidsai/cudf/pull/11354)) [@shwina](https://github.com/shwina)
- Handle parquet corner case: Columns with more rows than are in the row group. ([#11353](https://github.com/rapidsai/cudf/pull/11353)) [@nvdbaranec](https://github.com/nvdbaranec)
- Fix `DatetimeIndex` & `TimedeltaIndex` constructors ([#11342](https://github.com/rapidsai/cudf/pull/11342)) [@galipremsagar](https://github.com/galipremsagar)
- Fix unsigned-compare compile warning in IntPow binops ([#11339](https://github.com/rapidsai/cudf/pull/11339)) [@davidwendt](https://github.com/davidwendt)
- Fix performance issue and add a new code path to `cudf::detail::contains` ([#11330](https://github.com/rapidsai/cudf/pull/11330)) [@ttnghia](https://github.com/ttnghia)
- Pin `pytorch` to temporarily unblock from `libcupti` errors ([#11289](https://github.com/rapidsai/cudf/pull/11289)) [@galipremsagar](https://github.com/galipremsagar)
- Workaround for nvcomp zstd overwriting blocks for orc due to underestimate of sizes ([#11288](https://github.com/rapidsai/cudf/pull/11288)) [@jbrennan333](https://github.com/jbrennan333)
- Fix inconsistency when hashing two tables in `cudf::detail::contains` ([#11284](https://github.com/rapidsai/cudf/pull/11284)) [@ttnghia](https://github.com/ttnghia)
- Fix issue related to numpy array and `category` dtype ([#11282](https://github.com/rapidsai/cudf/pull/11282)) [@galipremsagar](https://github.com/galipremsagar)
- Add NotImplementedError when on is specified in DataFrame.join. ([#11275](https://github.com/rapidsai/cudf/pull/11275)) [@vyasr](https://github.com/vyasr)
- Fix invalid allocate_like() and empty_like() tests. ([#11268](https://github.com/rapidsai/cudf/pull/11268)) [@nvdbaranec](https://github.com/nvdbaranec)
- Returns DataFrame When Concatenating Along Axis 1 ([#11263](https://github.com/rapidsai/cudf/pull/11263)) [@isVoid](https://github.com/isVoid)
- Fix compile error due to missing header ([#11257](https://github.com/rapidsai/cudf/pull/11257)) [@ttnghia](https://github.com/ttnghia)
- Fix a memory aliasing/crash issue in scatter for lists. ([#11254](https://github.com/rapidsai/cudf/pull/11254)) [@nvdbaranec](https://github.com/nvdbaranec)
- Fix `tests/rolling/empty_input_test` ([#11238](https://github.com/rapidsai/cudf/pull/11238)) [@ttnghia](https://github.com/ttnghia)
- Fix const qualifier when using `host_span<bitmask_type const*>` ([#11220](https://github.com/rapidsai/cudf/pull/11220)) [@ttnghia](https://github.com/ttnghia)
- Avoid using `nvcompBatchedDeflateDecompressGetTempSizeEx` in cuIO ([#11213](https://github.com/rapidsai/cudf/pull/11213)) [@vuule](https://github.com/vuule)
- Generate benchmark data with correct run length regardless of cardinality ([#11205](https://github.com/rapidsai/cudf/pull/11205)) [@vuule](https://github.com/vuule)
- Fix cumulative count index behavior ([#11188](https://github.com/rapidsai/cudf/pull/11188)) [@brandon-b-miller](https://github.com/brandon-b-miller)
- Fix assertion in dask_cudf test_struct_explode ([#11170](https://github.com/rapidsai/cudf/pull/11170)) [@rjzamora](https://github.com/rjzamora)
- Provides a method for the user to remove the hook and re-register the hook in a custom shutdown hook manager ([#11161](https://github.com/rapidsai/cudf/pull/11161)) [@res-life](https://github.com/res-life)