-
Notifications
You must be signed in to change notification settings - Fork 688
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
update v4.0.9 release notes at 2020-11-30T13:17:16
Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
- Loading branch information
Showing
1 changed file
with
128 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
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| --- | ||
| title: tidb v4.0.9 Release Notes | ||
| category: Releases | ||
| aliases: ['/docs/dev/releases/v4.0.9/'] | ||
| --- | ||
|
|
||
| # tidb v4.0.9 Release Notes | ||
|
|
||
| Release date: November 30, 2020 | ||
|
|
||
| TiDB version: v4.0.9 | ||
|
|
||
| ## New Features | ||
|
|
||
| + TiFlash | ||
|
|
||
| - Support multi-disks for storing latest data [#1159](https://github.com/pingcap/tics/pull/1159) | ||
|
|
||
| ## Bug Fixes | ||
|
|
||
| + TiDB | ||
|
|
||
| - Fix incorrect results when using a prefix index with OR condition [#21287](https://github.com/pingcap/tidb/pull/21287) | ||
| - Fix a bug cause panic when retry is enable. [#21285](https://github.com/pingcap/tidb/pull/21285) | ||
| - Fix a bug that checks partition definition according to column type [#21273](https://github.com/pingcap/tidb/pull/21273) | ||
| - Fix a bug that hash type partition does not check partition name is unique [#21257](https://github.com/pingcap/tidb/pull/21257) | ||
| - Fix unexpected error when `INSERT` meets index join in some cases. [#21249](https://github.com/pingcap/tidb/pull/21249) | ||
| - Fix insert value into hash partition table which not int [#21238](https://github.com/pingcap/tidb/pull/21238) | ||
| - Fix Bigint unsigned column value in CASE WHEN operator is converted to bigint signed #9869 [#21236](https://github.com/pingcap/tidb/pull/21236) | ||
| - Fix a bug that index-hash-join and index-merge-join doesn't consider collation [#21219](https://github.com/pingcap/tidb/pull/21219) | ||
| - Fix issue of the query result of slow_query maybe miss some rows. [#21211](https://github.com/pingcap/tidb/pull/21211) | ||
| - `DELETE` may not delete data correctly when the database name is not in pure lower representation. [#21206](https://github.com/pingcap/tidb/pull/21206) | ||
| - Raise an error when preparing the `load data` statement. [#21199](https://github.com/pingcap/tidb/pull/21199) | ||
| - Fix a bug that partition table does not consider collation in `create table` and `select` sentence. [#21181](https://github.com/pingcap/tidb/pull/21181) | ||
| - Disallow multi-updates on primary key [#21113](https://github.com/pingcap/tidb/pull/21113) | ||
| - Fix a bug causes schema change after DML [#21050](https://github.com/pingcap/tidb/pull/21050) | ||
| - Fix the bug that can not query the coalesced column when use using-join. [#21021](https://github.com/pingcap/tidb/pull/21021) | ||
| - Fix wrong results for some semi join queries. [#21019](https://github.com/pingcap/tidb/pull/21019) | ||
| - Fix table lock for update statement. [#21002](https://github.com/pingcap/tidb/pull/21002) | ||
| - Fix stack overflow when building recursive view. [#21001](https://github.com/pingcap/tidb/pull/21001) | ||
| - Ddl: ignore integer zerofill size attribute when changing the column types [#20986](https://github.com/pingcap/tidb/pull/20986) | ||
| - Fix unexpected results when do merge join on outer join [#20954](https://github.com/pingcap/tidb/pull/20954) | ||
| - Fix the issue that sometimes a transaction that has undetermined result may be treated as failed. [#20925](https://github.com/pingcap/tidb/pull/20925) | ||
|
|
||
| + PD | ||
|
|
||
| - Fix the issue that the leader role does not take effect when using the replacement rule in some cases [#3208](https://github.com/pingcap/pd/pull/3208) | ||
| - Fix the bug that `trace-region-flow` will be accidentally changed to `false`. [#3120](https://github.com/pingcap/pd/pull/3120) | ||
|
|
||
| + TiFlash | ||
|
|
||
| - Fix the problem that `INFORMATION_SCHEMA.CLUSTER_HARDWARE` may contain information about disks not in use. [#1248](https://github.com/pingcap/tics/pull/1248) | ||
| - Fix the issue that the memory consumption statistic of Delta Cache is smaller than actual usage. [#1212](https://github.com/pingcap/tics/pull/1212) | ||
|
|
||
| ## Improvements | ||
|
|
||
| + TiDB | ||
|
|
||
| - Ban (index) merge join heuristically when convert equal conditions to other conditions. [#21146](https://github.com/pingcap/tidb/pull/21146) | ||
| - Differentiate types for user variables [#21107](https://github.com/pingcap/tidb/pull/21107) | ||
| - Allow set GOGC in config file. [#20922](https://github.com/pingcap/tidb/pull/20922) | ||
|
|
||
| + TiKV | ||
|
|
||
| - Add tag to split command to trace its source [#8936](https://github.com/tikv/tikv/pull/8936) | ||
|
|
||
| + TiFlash | ||
|
|
||
| - Implement `batch_read_index` to reduce latency about replica read. [#1236](https://github.com/pingcap/tics/pull/1236) | ||
| - Refine TiFlash's error message [#1231](https://github.com/pingcap/tics/pull/1231) | ||
| - Limit the memory usage of cache data under huge volume data. [#1229](https://github.com/pingcap/tics/pull/1229) | ||
| - > [#1227](https://github.com/pingcap/tics/pull/1227) | ||
| - Add metric "number of handling cop task". [#1183](https://github.com/pingcap/tics/pull/1183) | ||
|
|
||
| ## Others | ||
|
|
||
| + TiDB | ||
|
|
||
| - Fix issue of explain for connection can't show the last query plan/ [#21315](https://github.com/pingcap/tidb/pull/21315) | ||
| - Add metric for connection idle time [#21301](https://github.com/pingcap/tidb/pull/21301) | ||
| - Fix the issue that when Index Merge is used in a transaction with RC isolation level, the result may be incorrect. [#21253](https://github.com/pingcap/tidb/pull/21253) | ||
| - Planner: fix wrong point get plan generation in fast plan code path [#21244](https://github.com/pingcap/tidb/pull/21244) | ||
| - Expression: keep the original data type when doing date arithmetic operations [#21176](https://github.com/pingcap/tidb/pull/21176) | ||
| - Ddl: Fix partition table's partition column values type check [#21136](https://github.com/pingcap/tidb/pull/21136) | ||
| - Make dump binary time more compatible with MySQL [#21135](https://github.com/pingcap/tidb/pull/21135) | ||
| - Fix auto-id allocation failed because of transaction's write-conflict retry. [#21079](https://github.com/pingcap/tidb/pull/21079) | ||
| - Fix The JSON Data can not import to TiDB correctly by `load data` [#21074](https://github.com/pingcap/tidb/pull/21074) | ||
| - Fix up displaying executor runtime info & Add runtime information for DML in explain analyze [#21066](https://github.com/pingcap/tidb/pull/21066) | ||
| - Deprecate `enable-streaming`. [#21055](https://github.com/pingcap/tidb/pull/21055) | ||
| - Avoid unnecessary warnings/errors when folding constants in shortcut-able expressions [#21040](https://github.com/pingcap/tidb/pull/21040) | ||
| - TiDB now provides an error for statements that use the syntax `LOCK IN SHARE MODE`. This helps alert users that this feature is not implemented by TiDB, but a workaround to restore the previous behavior is available by setting `tidb_enable_noop_functions=1`. [#21005](https://github.com/pingcap/tidb/pull/21005) | ||
| - Set correct default value for new added enum column. [#20998](https://github.com/pingcap/tidb/pull/20998) | ||
|
|
||
| + TiKV | ||
|
|
||
| - Fix a bug that Coprocessor may return wrong result when there are > 255 columns. [#9131](https://github.com/tikv/tikv/pull/9131) | ||
| - Fix an issue that region merge may cause data loss during network partition. [#9108](https://github.com/tikv/tikv/pull/9108) | ||
| - Enable dynamically change config pessimistic-txn.pipelined. [#9100](https://github.com/tikv/tikv/pull/9100) | ||
| - Running checksum in BR and Lightning should have less influence on the cluster performance. [#9098](https://github.com/tikv/tikv/pull/9098) | ||
| - Revert "encryption: Turn file dictionary into log style" [#9097](https://github.com/tikv/tikv/pull/9097) | ||
| - Add a metrics for ingest sst errors [#9096](https://github.com/tikv/tikv/pull/9096) | ||
| - Prevent hibernation when there are still peers catching up logs [#9093](https://github.com/tikv/tikv/pull/9093) | ||
| - Increase the success rate of pipelined pessimistic locking. [#9086](https://github.com/tikv/tikv/pull/9086) | ||
| - Fix a bug may cause analyze statement panic when using the latin1 character set. [#9082](https://github.com/tikv/tikv/pull/9082) | ||
| - Config: fix invalid advertise-status-addr [#9036](https://github.com/tikv/tikv/pull/9036) | ||
| - Fix cast decimal as time expr get wrong result when deal with numbers argument [#9031](https://github.com/tikv/tikv/pull/9031) | ||
| - Add check to avoid corruption due to RocksDB block cache error #8243. Also disable `force-consistency-checks` by default to improve performance. [#9029](https://github.com/tikv/tikv/pull/9029) | ||
| - Change the default value of `apply-max-batch-size` and `store-max-batch-size` to 1024. [#9020](https://github.com/tikv/tikv/pull/9020) | ||
| - Fix the bug that lightning fails to ingest sst files to tikv with importer/local backend when TDE is enabled [#8995](https://github.com/tikv/tikv/pull/8995) | ||
| - Turn file dictionary into log style. [#8960](https://github.com/tikv/tikv/pull/8960) | ||
| - Add config for max-background-flushes [#8947](https://github.com/tikv/tikv/pull/8947) | ||
| - Fix the issue that reports a key-exist error when a key is locked and deleted by a committed transaction. [#8930](https://github.com/tikv/tikv/pull/8930) | ||
| - Enable the unified read pool for the storage module by default. [#8887](https://github.com/tikv/tikv/pull/8887) | ||
|
|
||
| + PD | ||
|
|
||
| - Dashboard: update to v2020.11.26.1 [#3219](https://github.com/pingcap/pd/pull/3219) | ||
| - Check cluster version on stores become tombstone [#3213](https://github.com/pingcap/pd/pull/3213) | ||
| - The store of lower version is no longer allowed to change from `Tombstone` back to `Up`. [#3206](https://github.com/pingcap/pd/pull/3206) | ||
| - Fix a bug that service safe points with infinite TTL may disappear. [#3143](https://github.com/pingcap/pd/pull/3143) | ||
|
|
||
| + Tools | ||
|
|
||
| - TiCDC | ||
|
|
||
| * Metrics: add alert for tikv hibernate regions [#1120](https://github.com/pingcap/ticdc/pull/1120) | ||
| * Fix the bug that multiple owners could exist when owner campaign key is deleted [#1104](https://github.com/pingcap/ticdc/pull/1104) | ||
| * Kafka_consumer: fix wrong timezone when 'TZ' env is not set and downstream is mysql [#1095](https://github.com/pingcap/ticdc/pull/1095) |