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 4.0.16 release notes (pingcap#7119)
- Loading branch information
1 parent
ae32fb9
commit 0ddb712
Showing
4 changed files
with
115 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 +1,112 @@ | ||
| --- | ||
| title: TiDB 4.0.16 Release Notes | ||
| --- | ||
|
|
||
| # TiDB 4.0.16 Release Notes | ||
|
|
||
| Release date: December 17, 2021 | ||
|
|
||
| TiDB version: 4.0.16 | ||
|
|
||
| ## Compatibility changes | ||
|
|
||
| + TiKV | ||
|
|
||
| - Before v4.0.16, when TiDB converts an illegal UTF-8 string to a Real type, an error is reported directly. Starting from v4.0.16, TiDB processes the conversion according to the legal UTF-8 prefix in the string [#11466](https://github.com/tikv/tikv/issues/11466) | ||
|
|
||
| + Tools | ||
|
|
||
| + TiCDC | ||
|
|
||
| - Change the default value of Kafka Sink `max-message-bytes` to 1 MB to prevent TiCDC from sending too large messages to Kafka clusters [#2962](https://github.com/pingcap/ticdc/issues/2962) | ||
| - Change the default value of Kafka Sink `partition-num` to 3 so that TiCDC distributes messages across Kafka partitions more evenly [#3337](https://github.com/pingcap/ticdc/issues/3337) | ||
|
|
||
| ## Improvements | ||
|
|
||
| + TiDB | ||
|
|
||
| - Upgrade the Grafana version from 7.5.7 to 7.5.11 | ||
|
|
||
| + TiKV | ||
|
|
||
| - Reduce disk space consumption by adopting the zstd algorithm to compress SST files when restoring data using Backup & Restore or importing data using Local-backend of TiDB Lightning [#11469](https://github.com/tikv/tikv/issues/11469) | ||
|
|
||
| + Tools | ||
|
|
||
| + Backup & Restore (BR) | ||
|
|
||
| - Improve the robustness of restoring [#27421](https://github.com/pingcap/tidb/issues/27421) | ||
|
|
||
| + TiCDC | ||
|
|
||
| - Add a tick frequency limit to EtcdWorker to prevent frequent etcd writes from affecting PD services [#3112](https://github.com/pingcap/ticdc/issues/3112) | ||
| - Optimize rate limiting control on TiKV reloads to reduce gPRC congestion during changefeed initialization [#3110](https://github.com/pingcap/ticdc/issues/3110) | ||
|
|
||
| ## Bug fixes | ||
|
|
||
| + TiDB | ||
|
|
||
| - Fix the query panic caused by overflow in the statistics module when converting a range to points for cost estimation [#23625](https://github.com/pingcap/tidb/issues/23625) | ||
| - Fix wrong results of the control functions (such as `IF` and `CASE WHEN`) when using the `ENUM` type data as parameters of such functions [#23114](https://github.com/pingcap/tidb/issues/23114) | ||
| - Fix the issue that the `GREATEST` function returns inconsistent results due to different values of `tidb_enable_vectorized_expression` (`on` or `off`) [#29434](https://github.com/pingcap/tidb/issues/29434) | ||
| - Fix the panic when applying index join on prefix indexes in some cases [#24547](https://github.com/pingcap/tidb/issues/24547) | ||
| - Fix the issue that planner might cache invalid plans for `join` in some cases [#28087](https://github.com/pingcap/tidb/issues/28087) | ||
| - Fix a bug that TiDB cannot insert `null` into a non-null column when `sql_mode` is empty [#11648](https://github.com/pingcap/tidb/issues/11648) | ||
| - Fix the wrong result type of the `GREATEST` and `LEAST` functions [#29019](https://github.com/pingcap/tidb/issues/29019) | ||
| - Fix the `privilege check fail` error when performing the `grant` and `revoke` operations to grant and revoke global level privileges [#29675](https://github.com/pingcap/tidb/issues/29675) | ||
| - Fix the panic when using the `CASE WHEN` function on the `ENUM` data type [#29357](https://github.com/pingcap/tidb/issues/29357) | ||
| - Fix wrong results of the `microsecond` function in vectorized expressions [#29244](https://github.com/pingcap/tidb/issues/29244) | ||
| - Fix wrong results of the `hour` function in vectorized expression [#28643](https://github.com/pingcap/tidb/issues/28643) | ||
| - Fix the issue that optimistic transaction conflicts might cause transactions to block each other [#11148](https://github.com/tikv/tikv/issues/11148) | ||
| - Fix the issue of incomplete log information from the `auto analyze` result [#29188](https://github.com/pingcap/tidb/issues/29188) | ||
| - 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) | ||
| - Fix the issue that the Coprocessor Cache panel in Grafana does not display metrics. Now, Grafana displays the number of `hits`/`miss`/`evict` [#26338](https://github.com/pingcap/tidb/issues/26338) | ||
| - Fix the issue that concurrently truncating the same partition causes DDL statements to stuck [#26229](https://github.com/pingcap/tidb/issues/26229) | ||
| - Fix the issue that the length information is wrong when converting `Decimal` to `String` [#29417](https://github.com/pingcap/tidb/issues/29417) | ||
| - Fix the issue of an extra column in the query result when `NATURAL JOIN` is used to join multiple tables [#29481](https://github.com/pingcap/tidb/issues/29481) | ||
| - Fix the issue that `TopN` is wrongly pushed down to `indexPlan` when `IndexScan` uses a prefix index [#29711](https://github.com/pingcap/tidb/issues/29711) | ||
| - Fix the issue that retrying transactions with the auto-increment columns of `DOUBLE` type causes data corruption [#29892](https://github.com/pingcap/tidb/issues/29892) | ||
|
|
||
| + TiKV | ||
|
|
||
| - Fix a panic issue that occurs when Region merge, ConfChange, and Snapshot happen at the same time in extreme conditions [#11475](https://github.com/tikv/tikv/issues/11475) | ||
| - Fix the issue of negative sign when the decimal divide result is zero [#29586](https://github.com/pingcap/tidb/issues/29586) | ||
| - Fix the issue that the average latency of the by-instance gRPC requests is inaccurate in TiKV metrics [#11299](https://github.com/tikv/tikv/issues/11299) | ||
| - Fix the issue of TiCDC panic that occurs when the downstream database is missing [#11123](https://github.com/tikv/tikv/issues/11123) | ||
| - Fix the issue that the Raft connection is broken when the channel is full [#11047](https://github.com/tikv/tikv/issues/11047) | ||
| - Fix the issue that TiDB cannot correctly identify whether the `Int64` types in `Max`/`Min` functions are a signed integer or not, which causes the wrong calculation result of `Max`/`Min` [#10158](https://github.com/tikv/tikv/issues/10158) | ||
| - Fix the issue that CDC adds scan retries frequently due to the Congest error [#11082](https://github.com/tikv/tikv/issues/11082) | ||
|
|
||
| + PD | ||
|
|
||
| - Fix a panic issue that occurs after the TiKV node is removed [#4344](https://github.com/tikv/pd/issues/4344) | ||
| - Fix slow leader election caused by stucked region syncer [#3936](https://github.com/tikv/pd/issues/3936) | ||
| - Support that the evict leader scheduler can schedule regions with unhealthy peers [#4093](https://github.com/tikv/pd/issues/4093) | ||
|
|
||
| + TiFlash | ||
|
|
||
| - Fix the issue that TiFlash fails to start up on some platforms due to the absence of library `nsl` | ||
|
|
||
| + Tools | ||
|
|
||
| + TiDB Binlog | ||
|
|
||
| - Fix the bug that Drainer exits when transporting a transaction greater than 1 GB [#28659](https://github.com/pingcap/tidb/issues/28659) | ||
|
|
||
| + TiCDC | ||
|
|
||
| - Fix the negative value error in the changefeed checkpoint lag [#3010](https://github.com/pingcap/ticdc/issues/3010) | ||
| - Fix OOM in container environments [#1798](https://github.com/pingcap/ticdc/issues/1798) | ||
| - Fix the TiCDC replication interruption issue when multiple TiKVs crash or during a forced restart [#3288](https://github.com/pingcap/ticdc/issues/3288) | ||
| - Fix the memory leak issue after processing DDLs [#3174](https://github.com/pingcap/ticdc/issues/3174) | ||
| - Fix the issue that changefeed does not fail fast enough when the ErrGCTTLExceeded error occurs [#3111](https://github.com/pingcap/ticdc/issues/3111) | ||
| - Fix the issue that TiCDC replication task might terminate when the upstream TiDB instance unexpectedly exits [#3061](https://github.com/pingcap/ticdc/issues/3061) | ||
| - Fix the issue that TiCDC process might panic when TiKV sends duplicate requests to the same Region [#2386](https://github.com/pingcap/ticdc/issues/2386) | ||
| - Fix the issue that the volume of Kafka messages generated by TiCDC is not constrained by `max-message-size` [#2962](https://github.com/pingcap/ticdc/issues/2962) | ||
| - Fix the issue that `tikv_cdc_min_resolved_ts_no_change_for_1m` keeps alerting when there is no changefeed [#11017](https://github.com/tikv/tikv/issues/11017) | ||
| - Fix the issue that TiCDC sync task might pause when an error occurs during writing a Kafka message [#2978](https://github.com/pingcap/ticdc/issues/2978) | ||
| - Fix the issue that some partitioned tables without valid indexes might be ignored when `force-replicate` is enabled [#2834](https://github.com/pingcap/ticdc/issues/2834) | ||
| - Fix the memory leak issue when creating a new changefeed [#2389](https://github.com/pingcap/ticdc/issues/2389) | ||
| - Fix the issue that might cause inconsistent data due to Sink components advancing resolved ts early [#3503](https://github.com/pingcap/ticdc/issues/3503) | ||
| - Fix the issue that scanning stock data might fail due to TiKV performing GC when scanning stock data takes too long [#2470](https://github.com/pingcap/ticdc/issues/2470) | ||
| - Fix the issue that the changefeed update command does not recognize global command line parameters [#2803](https://github.com/pingcap/ticdc/issues/2803) |
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