releases: add 3.0.11 release notes (#1944) (#1947)

TOC.md

@@ -437,6 +437,7 @@
     - [3.1.0-beta.1](/releases/3.1.0-beta.1.md)
     - [3.1.0-beta](/releases/3.1.0-beta.md)
   + v3.0
+    - [3.0.11](/releases/3.0.11.md)
     - [3.0.10](/releases/3.0.10.md)
     - [3.0.9](/releases/3.0.9.md)
     - [3.0.8](/releases/3.0.8.md)

releases/3.0.11.md

@@ -0,0 +1,52 @@
+---
+title: TiDB 3.0.11 Release Notes
+category: Releases
+---
+
+# TiDB 3.0.11 Release Notes
+
+Release date: March 4, 2020
+
+TiDB version: 3.0.11
+
+TiDB Ansible version: 3.0.11
+
+## TiDB 3.0.11 Compatibility Changes
+
+* TiDB
+    + Add the `max-index-length` configuration item to control the maximum index length, which is compatible with the behavior of TiDB versions before 3.0.7 or of MySQL [#15057](https://github.com/pingcap/tidb/pull/15057)
+
+## New Features
+
+* TiDB
+    + Support showing the meta information of partitioned tables in the `information_schema.PARTITIONS` table [#14849](https://github.com/pingcap/tidb/pull/14849)
+
+* TiDB Binlog
+    + Support the bidirectional data replication between TiDB clusters [#884](https://github.com/pingcap/tidb-binlog/pull/884) [#909](https://github.com/pingcap/tidb-binlog/pull/909)
+
+* TiDB Lightning
+    + Support the TLS configuration [#44](https://github.com/tikv/importer/pull/44) [#270](https://github.com/pingcap/tidb-lightning/pull/270)
+
+* TiDB Ansible
+    + Modify the logic of `create_users.yml` so that users of the central control machine do not have to be consistent with `ansible_user` [#1184](https://github.com/pingcap/tidb-ansible/pull/1184)
+
+## Bugfixes
+
+* TiDB
+    + Fix the issue of Goroutine leaks when retrying an optimistic transaction because queries using `Union` are not marked read-only [#15076](https://github.com/pingcap/tidb/pull/15076)
+    + Fix the issue that `SHOW TABLE STATUS` fails to correctly output the table status at the snapshot time because the value of the `tidb_snapshot` parameter is not correctly used when executing the `SET SESSION tidb_snapshot = 'xxx';` statement [#14391](https://github.com/pingcap/tidb/pull/14391)
+    + Fix the incorrect result caused by a SQL statement that contains `Sort Merge Join` and `ORDER BY DESC` at the same time [#14664](https://github.com/pingcap/tidb/pull/14664)
+    + Fix the panic of  TiDB server when creating partition tables using the unsupported expression. The error information `This partition function is not allowed` is returned after fixing this panic. [#14769](https://github.com/pingcap/tidb/pull/14769)
+    + Fix the incorrect result occurred when executing the `select max() from subquery` statement with the subquery containing `Union` [#14944](https://github.com/pingcap/tidb/pull/14944)
+    + Fix the issue that an error message is returned when executing the `SHOW BINDINGS` statement after executing `DROP BINDING` that drops the execution binding [#14865](https://github.com/pingcap/tidb/pull/14865)
+    + Fix the issue that the connection is broken because the maximum length of an alias in a query is 256 characters in the MySQL protocol, but TiDB does not [cut the alias](https://dev.mysql.com/doc/refman/8.0/en/identifier-length.html) in the query results according to this protocol [#14940](https://github.com/pingcap/tidb/pull/14940)
+    + Fix the incorrect query result that might occur when using the string type in `DIV`. For instance, now you can correctly execute the `select 1 / '2007' div 1` statement [#14098](https://github.com/pingcap/tidb/pull/14098)
+
+* TiKV
+    + Optimize the log output by removing unnecessary logs [#6657](https://github.com/tikv/tikv/pull/6657)
+    + Fix the panic that might occur when the peer is removed under high loads [#6704](https://github.com/tikv/tikv/pull/6704)
+    + Fix the issue that Hibernate Regions are not waken up in some cases [#6732](https://github.com/tikv/tikv/pull/6732) [#6738](https://github.com/tikv/tikv/pull/6738)
+
+* TiDB Ansible
+    + Update outdated document links in `tidb-ansible` [#1169](https://github.com/pingcap/tidb-ansible/pull/1169)
+    + Fix the issue that undefined variables might occur in the `wait for region replication complete` task [#1173](https://github.com/pingcap/tidb-ansible/pull/1173)

releases/rn.md

@@ -12,6 +12,7 @@ category: release
 
 ## 3.0
 
+- [3.0.11](/releases/3.0.11.md)
 - [3.0.10](/releases/3.0.10.md)
 - [3.0.9](/releases/3.0.9.md)
 - [3.0.8](/releases/3.0.8.md)