forked from pingcap/docs
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
releases: add tidb 5.1.2 release notes (pingcap#6500)
* releases: add TiDB 5.1.2-10-06-33 release notes * releases: add TiDB 5.1.2-10-06-33 release notes * Update releases/release-5.1.2-10-06-33.md * toc * Apply suggestions from code review Co-authored-by: Liuxiaozhen12 <82579298+Liuxiaozhen12@users.noreply.github.com> * Update releases/release-5.1.2.md * Update releases/release-5.1.2.md * add notes from comments * add more tidb notes * Update releases/release-5.1.2.md Co-authored-by: Yuanjia Zhang <qw4990@163.com> * Apply suggestions from code review * Apply suggestions from code review Co-authored-by: Liuxiaozhen12 <82579298+Liuxiaozhen12@users.noreply.github.com> Co-authored-by: Enwei <jinenwei@pingcap.com> Co-authored-by: xixirangrang <35301108+hfxsd@users.noreply.github.com> * Update releases/release-5.1.2.md Co-authored-by: shichun-0415 <89768198+shichun-0415@users.noreply.github.com> * Update releases/release-5.1.2.md Co-authored-by: Yuanjia Zhang <qw4990@163.com> * Apply suggestions from code review Co-authored-by: Liuxiaozhen12 <82579298+Liuxiaozhen12@users.noreply.github.com> Co-authored-by: shichun-0415 <89768198+shichun-0415@users.noreply.github.com> * replace pr numbers with issue numbers * Update releases/release-5.1.2.md Co-authored-by: Liuxiaozhen12 <82579298+Liuxiaozhen12@users.noreply.github.com> * Apply suggestions from code review Co-authored-by: Liuxiaozhen12 <82579298+Liuxiaozhen12@users.noreply.github.com> Co-authored-by: Enwei <jinenwei@pingcap.com> * fix * Update releases/release-5.1.2.md * Update releases/release-5.1.2.md * Apply suggestions from code review * Update releases/release-5.1.2.md * Update releases/release-5.1.2.md Co-authored-by: Enwei <jinenwei@pingcap.com> * Update releases/release-5.1.2.md Co-authored-by: Grace Cai <qqzczy@126.com> * Update releases/release-5.1.2.md * Apply suggestions from code review * Apply suggestions from code review * Update releases/release-5.1.2.md * Update releases/release-5.1.2.md Co-authored-by: Enwei <jinenwei@pingcap.com> * Update releases/release-5.1.2.md Co-authored-by: shichun-0415 <89768198+shichun-0415@users.noreply.github.com> * Update releases/release-5.1.2.md * Update releases/release-5.1.2.md * Apply suggestions from code review * move notes Co-authored-by: TomShawn <41534398+TomShawn@users.noreply.github.com> Co-authored-by: Liuxiaozhen12 <82579298+Liuxiaozhen12@users.noreply.github.com> Co-authored-by: Grace Cai <qqzczy@126.com> Co-authored-by: Yuanjia Zhang <qw4990@163.com> Co-authored-by: Enwei <jinenwei@pingcap.com> Co-authored-by: xixirangrang <35301108+hfxsd@users.noreply.github.com> Co-authored-by: shichun-0415 <89768198+shichun-0415@users.noreply.github.com>
- Loading branch information
1 parent
408d950
commit 9fd55f7
Showing
3 changed files
with
156 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| --- | ||
| title: TiDB 5.1.2 Release Notes | ||
| --- | ||
|
|
||
| # TiDB 5.1.2 Release Notes | ||
|
|
||
| Release Date: September 27, 2021 | ||
|
|
||
| TiDB version: 5.1.2 | ||
|
|
||
| ## Compatibility changes | ||
|
|
||
| + TiDB | ||
|
|
||
| + The following bug fixes change execution results, which might cause upgrade incompatibilities: | ||
|
|
||
| - Fix the issue that `greatest(datetime) union null` returns empty string [#26532](https://github.com/pingcap/tidb/issues/26532) | ||
| - Fix the issue that the `having` clause might not work correctly [#26496](https://github.com/pingcap/tidb/issues/26496) | ||
| - Fix the wrong execution results that occur when the collations around the `between` expression are different [#27146](https://github.com/pingcap/tidb/issues/27146) | ||
| - Fix the wrong execution results that occur when the column in the `group_concat` function has a non-bin collation [#27429](https://github.com/pingcap/tidb/issues/27429) | ||
| - Fix an issue that using a `count(distinct)` expression on multiple columns returns wrong result when the new collation is enabled [#27091](https://github.com/pingcap/tidb/issues/27091) | ||
| - Fix the result wrong that occurs when the argument of the `extract` function is a negative duration [#27236](https://github.com/pingcap/tidb/issues/27236) | ||
| - Fix the issue that inserting an invalid date does not report an error when the `SQL_MODE` is 'STRICT_TRANS_TABLES' [#26762](https://github.com/pingcap/tidb/issues/26762) | ||
| - Fix the issue that using an invalid default date does not report an error when the `SQL_MODE` is 'NO_ZERO_IN_DATE' [#26766](https://github.com/pingcap/tidb/issues/26766) | ||
|
|
||
| + Tools | ||
|
|
||
| + TiCDC | ||
|
|
||
| - Set the compatible version from `5.1.0-alpha` to `5.2.0-alpha` [#2659](https://github.com/pingcap/ticdc/pull/2659) | ||
|
|
||
| ## Improvements | ||
|
|
||
| + TiDB | ||
|
|
||
| - Trigger auto-analyze by histogram row count and increase the accuracy of this trigger action [#24237](https://github.com/pingcap/tidb/issues/24237) | ||
|
|
||
| + TiKV | ||
|
|
||
| - Support dynamically modifying TiCDC configurations [#10645](https://github.com/tikv/tikv/issues/10645) | ||
| - Reduce the size of Resolved TS message to save network bandwidth [#2448](https://github.com/pingcap/ticdc/issues/2448) | ||
| - Limit the counts of peer stats in the heartbeat message reported by a single store [#10621](https://github.com/tikv/tikv/pull/10621) | ||
|
|
||
| + PD | ||
|
|
||
| - Allow empty Regions to be scheduled and use a separate tolerance configuration in scatter range scheduler [#4117](https://github.com/tikv/pd/pull/4117) | ||
| - Improve the performance of synchronizing Region information between PDs [#3933](https://github.com/tikv/pd/pull/3933) | ||
| - Support dynamically adjusting the retry limit of a store based on the generated operator [#3744](https://github.com/tikv/pd/issues/3744) | ||
|
|
||
| + TiFlash | ||
|
|
||
| - Support the `DATE()` function | ||
| - Add Grafana panels for write throughput per instance | ||
| - Optimize the performance of the `leader-read` process | ||
| - Accelerate the process of canceling MPP tasks | ||
|
|
||
| + Tools | ||
|
|
||
| + TiCDC | ||
|
|
||
| - Optimize memory management when the Unified Sorter is using memory to sort data [#2553](https://github.com/pingcap/ticdc/issues/2553) | ||
| - Optimize workerpool for fewer goroutines when concurrency is high [#2211](https://github.com/pingcap/ticdc/issues/2211) | ||
| - Reduce goroutine usage when a table's Region transfer away from a TiKV node [#2284](https://github.com/pingcap/ticdc/issues/2284) | ||
|
|
||
| + Dumpling | ||
|
|
||
| - Support backing up MySQL-compatible databases that do not support `START TRANSACTION ... WITH CONSISTENT SNAPSHOT` and `SHOW CREATE TABLE` [#309](https://github.com/pingcap/dumpling/issues/309) | ||
| - Add a global gRPC connection pool and share gRPC connections among KV clients [#2534](https://github.com/pingcap/ticdc/pull/2534) | ||
| - Prohibit operating TiCDC clusters across major and minor versions [#2599](https://github.com/pingcap/ticdc/pull/2599) | ||
|
|
||
| ## Bug fixes | ||
|
|
||
| + TiDB | ||
|
|
||
| - Fix the potential wrong results of index hash join when the hash column is the `ENUM` type [#27893](https://github.com/pingcap/tidb/issues/27893) | ||
| - Fix a batch client bug that recycle idle connection might block sending requests in some rare cases [#27678](https://github.com/pingcap/tidb/pull/27678) | ||
| - Fix the issue that the overflow check of the `FLOAT64` type is different with that of MySQL [#23897](https://github.com/pingcap/tidb/issues/23897) | ||
| - Fix the issue that TiDB returns an `unknow` error while it should return the `pd is timeout` error [#26147](https://github.com/pingcap/tidb/issues/26147) | ||
| - Fix the wrong character set and collation for the `case when` expression [#26662](https://github.com/pingcap/tidb/issues/26662) | ||
| - Fix the potential `can not found column in Schema column` error for MPP queries [#28148](https://github.com/pingcap/tidb/pull/28148) | ||
| - Fix a bug that TiDB might panic when TiFlash is shutting down [#28096](https://github.com/pingcap/tidb/issues/28096) | ||
| - Fix the issue of wrong range caused by using `enum like 'x%'` [#27130](https://github.com/pingcap/tidb/issues/27130) | ||
| - Fix the Common Table Expression (CTE) dead lock issue when used with IndexLookupJoin [#27410](https://github.com/pingcap/tidb/issues/27410) | ||
| - Fix a bug that retryable deadlocks are incorrectly recorded into the `INFORMATION_SCHEMA.DEADLOCKS` table [#27400](https://github.com/pingcap/tidb/issues/27400) | ||
| - Fix the issue that the `TABLESAMPLE` query result from partitioned tables is not sorted as expected [#27349](https://github.com/pingcap/tidb/issues/27349) | ||
| - Remove the unused `/debug/sub-optimal-plan` HTTP API [#27265](https://github.com/pingcap/tidb/pull/27265) | ||
| - Fix a bug that the query might return wrong results when the hash partitioned table deals with unsigned data [#26569](https://github.com/pingcap/tidb/issues/26569) | ||
| - Fix a bug that creating partition fails if `NO_UNSIGNED_SUBTRACTION` is set [#26765](https://github.com/pingcap/tidb/issues/26765) | ||
| - Fix the issue that the `distinct` flag is missing when `Apply` is converted to `Join` [#26958](https://github.com/pingcap/tidb/issues/26958) | ||
| - Set a block duration for the newly recovered TiFlash node to avoid blocking queries during this time [#26897](https://github.com/pingcap/tidb/pull/26897) | ||
| - Fix a bug that might occur when the CTE is referenced more than once [#26212](https://github.com/pingcap/tidb/issues/26212) | ||
| - Fix a CTE bug when MergeJoin is used [#25474](https://github.com/pingcap/tidb/issues/25474) | ||
| - Fix a bug that the `SELECT FOR UPDATE` statement does not correctly lock the data when a normal table joins a partitioned table [#26251](https://github.com/pingcap/tidb/issues/26251) | ||
| - Fix the issue that the `SELECT FOR UPDATE` statement returns an error when a normal table joins a partitioned table [#26250](https://github.com/pingcap/tidb/issues/26250) | ||
| - Fix the issue that `PointGet` does not use the lite version of resolving lock [#26562](https://github.com/pingcap/tidb/pull/26562) | ||
|
|
||
| + TiKV | ||
|
|
||
| - Fix a panic issue that occurs after TiKV is upgraded from v3.x to later versions [#10902](https://github.com/tikv/tikv/issues/10902) | ||
| - Fix the potential disk full issue caused by corrupted snapshot files [#10813](https://github.com/tikv/tikv/issues/10813) | ||
| - Make the slow log of TiKV coprocessor only consider the time spent on processing requests [#10841](https://github.com/tikv/tikv/issues/10841) | ||
| - Drop log instead of blocking threads when the slogger thread is overloaded and the queue is filled up [#10841](https://github.com/tikv/tikv/issues/10841) | ||
| - Fix a panic issue that occurs when processing Coprocessor requests times out [#10852](https://github.com/tikv/tikv/issues/10852) | ||
| - Fix the TiKV panic issue that occurs when upgrading from a pre-5.0 version with Titan enabled [#10842](https://github.com/tikv/tikv/pull/10842) | ||
| - Fix the issue that TiKV of a newer version cannot be rolled back to v5.0.x [#10842](https://github.com/tikv/tikv/pull/10842) | ||
| - Fix the issue that TiKV might delete files before ingesting data to RocksDB [#10438](https://github.com/tikv/tikv/issues/10438) | ||
| - Fix the parsing failure caused by the left pessimistic locks [#26404](https://github.com/pingcap/tidb/issues/26404) | ||
|
|
||
| + PD | ||
|
|
||
| - Fix the issue that PD does not fix the down peers in time [#4077](https://github.com/tikv/pd/issues/4077) | ||
| - Fix the issue that the replica count of the default placement rules stays constant after `replication.max-replicas` is updated [#3886](https://github.com/tikv/pd/issues/3886) | ||
| - Fix a bug that PD might panic when scaling out TiKV [#3868](https://github.com/tikv/pd/issues/3868) | ||
| - Fix a bug that the hot Region scheduler cannot work when the cluster has the evict leader scheduler [#3697](https://github.com/tikv/pd/issues/3697) | ||
|
|
||
| + TiFlash | ||
|
|
||
| - Fix the issue of unexpected results when TiFlash fails to establish MPP connections | ||
| - Fix the potential issue of data inconsistency that occurs when TiFlash is deployed on multiple disks | ||
| - Fix a bug that MPP queries get wrong results when TiFlash server is under high load | ||
| - Fix a potential bug that MPP queries hang forever | ||
| - Fix the panic issue when operating store initialization and DDL simultaneously | ||
| - Fix a bug of incorrect results that occurs when queries contain filters like `CONSTANT`, `<`, `<=`, `>`, `>=`, or `COLUMN` | ||
| - Fix the potential panic issue when `Snapshot` is applied simultaneously with multiple DDL operations | ||
| - Fix the issue that the store size in metrics is inaccurate under heavy writing | ||
| - Fix the potential issue that TiFlash cannot garbage-collect the delta data after running for a long time | ||
| - Fix the issue of wrong results when the new collation is enabled | ||
| - Fix the potential panic issue that occurs when resolving locks | ||
| - Fix a potential bug that metrics display wrong values | ||
|
|
||
| + Tools | ||
|
|
||
| + Backup & Restore (BR) | ||
|
|
||
| - Fix the issue that the average speed is not accurate during data backup and restore [#1405](https://github.com/pingcap/br/issues/1405) | ||
|
|
||
| + Dumpling | ||
|
|
||
| - Fix the issue that Dumpling is pending when `show table status` returns incorrect results in some MySQL versions (8.0.3 and 8.0.23) [#322](https://github.com/pingcap/dumpling/issues/322) | ||
| - Fix the CLI compatibility issue with 4.0.x clusters on the default `sort-engine` option [#2373](https://github.com/pingcap/ticdc/issues/2373) | ||
|
|
||
| + TiCDC | ||
|
|
||
| - Fix a bug that the JSON encoding might cause panic when processing a string type value that is `string` or `[]byte` [#2758](https://github.com/pingcap/ticdc/issues/2758) | ||
| - Reduce gRPC window size to avoid OOM [#2202](https://github.com/pingcap/ticdc/issues/2202) | ||
| - Fix a gRPC `keepalive` error under high memory pressure [#2202](https://github.com/pingcap/ticdc/issues/2202) | ||
| - Fix a bug that an unsigned `tinyint` causes TiCDC to panic [#2648](https://github.com/pingcap/ticdc/issues/2648) | ||
| - Fix an empty value issue in TiCDC Open Protocol. An empty value is no longer output when there is no change in one transaction. [#2612](https://github.com/pingcap/ticdc/issues/2612) | ||
| - Fix a bug in DDL handling during manual restarts [#2603](https://github.com/pingcap/ticdc/issues/2603) | ||
| - Fix the issue that `EtcdWorker`'s snapshot isolation might be wrongly violated when managing the metadata [#2559](https://github.com/pingcap/ticdc/pull/2559) | ||
| - Fix a bug that multiple processors might write data to the same table when TiCDC is rescheduling the table [#2230](https://github.com/pingcap/ticdc/issues/2230) | ||
| - Fix a bug that changefeed might be reset unexpectedly when TiCDC gets the `ErrSchemaStorageTableMiss` error [#2422](https://github.com/pingcap/ticdc/issues/2422) | ||
| - Fix a bug that changefeed cannot be removed when TiCDC gets the `ErrGCTTLExceeded` error [#2391](https://github.com/pingcap/ticdc/issues/2391) | ||
| - Fix a bug that TiCDC fails to synchronize large tables to cdclog [#1259](https://github.com/pingcap/ticdc/issues/1259) [#2424](https://github.com/pingcap/ticdc/issues/2424) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters