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planner: handle the expected row count for pushed-down selection in mpp #36195

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merged 4 commits into from
Jul 13, 2022

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time-and-fate
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What problem does this PR solve?

Issue Number: close #36194

Problem Summary:

We didn't handle the expected row count for pushed-down selection in mpp task.

What is changed and how it works?

Handle the row count for pushed-down selection for mpp task the same as other tasks:

ts.addPushedDownSelection(copTask, ds.stats.ScaleByExpectCnt(prop.ExpectedCnt))

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No code

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

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ti-chi-bot commented Jul 13, 2022

[REVIEW NOTIFICATION]

This pull request has been approved by:

  • winoros
  • xuyifangreeneyes

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Jul 13, 2022
@ti-chi-bot ti-chi-bot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. and removed size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Jul 13, 2022
@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Jul 13, 2022
@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Jul 13, 2022
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: ee63c3d

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Jul 13, 2022
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sre-bot commented Jul 13, 2022

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@time-and-fate: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

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/run-all-tests

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/run-all-tests

@ti-chi-bot ti-chi-bot merged commit 24eb419 into pingcap:master Jul 13, 2022
joycse06 added a commit to joycse06/tidb that referenced this pull request Jul 13, 2022
* master: (27 commits)
  executor: parallel cancel mpp query (pingcap#36161)
  store/copr: adjust the cop cache admission process time for paging (pingcap#36157)
  log-backup: get can restored global-checkpoint-ts when support v3 checkpoint advance (pingcap#36197)
  executor: optimize cursor read point get by reading through pessimistic lock cache (pingcap#36149)
  *: add tidb_min_paging_size system variable (pingcap#36107)
  planner: handle the expected row count for pushed-down selection in mpp (pingcap#36195)
  *: support show ddl jobs for sub-jobs (pingcap#36168)
  table-filter: optimize table pattern message and unit tests (pingcap#36160)
  domain: fix unstable test TestAbnormalSessionPool (pingcap#36154)
  executor: check the error returned by `handleNoDelay` (pingcap#36105)
  log-backup: fix checkpoint display (pingcap#36166)
  store/mockstore/unistore: fix several issues of coprocessor paging in unistore (pingcap#36147)
  test: refactor restart test (pingcap#36174)
  ddl: support rename index and columns for multi-schema change (pingcap#36148)
  test: remove meaningless test and update bazel (pingcap#36136)
  planner: Reduce verbosity of logging unknown system variables (pingcap#36013)
  metrics/grafana: bring back the plan cache miss panel (pingcap#36081)
  ddl: implement table granularity DDL for SchemaTracker (pingcap#36077)
  *: bazel use jdk 17 (pingcap#36070)
  telemetry: add reviewer rule (pingcap#36084)
  ...
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Successfully merging this pull request may close these issues.

The row count of selection in Limit->Selection->TableFullScan(mpp) is incorrect
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