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releases: add tidb 5.0.4 release notes #6449

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merged 18 commits into from
Sep 27, 2021
Merged

releases: add tidb 5.0.4 release notes #6449

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0ec720c
merge from upstream master
ti-srebot Jul 31, 2021
52154e9
releases: add TiDB 5.0.4-15-38-41 release notes
ti-srebot Sep 10, 2021
2078ee5
Merge branch 'pingcap:master' into update-5.0.4-15-38-41
TomShawn Sep 10, 2021
2e72206
add toc
TomShawn Sep 10, 2021
6ee7f8d
Update releases/release-5.0.4.md
TomShawn Sep 10, 2021
e8cb303
Update releases/release-5.0.4.md
Little-Wallace Sep 14, 2021
f8ac632
add tikv and tiflash notes
TomShawn Sep 15, 2021
7e1977e
add tidb notes (excluding compatibility changes)
TomShawn Sep 15, 2021
bf6d3f2
add tidb pd tools notes
TomShawn Sep 17, 2021
43e818c
revise < L130
TomShawn Sep 17, 2021
4e90568
revise < 146
TomShawn Sep 17, 2021
eb8d0da
revise < 150
TomShawn Sep 18, 2021
c9f3d19
the rest
TomShawn Sep 18, 2021
a36b61f
Update release-5.0.4.md
qiancai Sep 24, 2021
2b92511
more pr to issue
TomShawn Sep 24, 2021
19c490a
fix
TomShawn Sep 26, 2021
9658f2b
fix a note
TomShawn Sep 26, 2021
eb74638
Update releases/release-5.0.4.md
TomShawn Sep 26, 2021
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@TomShawn
TomShawn committed Sep 26, 2021
commit 19c490ae789edb4e07691624e1854016041f2eb1
24 changes: 12 additions & 12 deletions releases/release-5.0.4.md
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Expand Up @@ -27,7 +27,7 @@ TiDB version: 5.0.4
- 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 a bug on the query range of prefix index [#26029](https://github.com/pingcap/tidb/issues/26029)
- Fix the issue that the `LOAD DATA` statement might abnormally import non-utf8 data [#25979](https://github.com/pingcap/tidb/issues/25979)
- Fix the issue that `insert ignore on duplicate update` might insert wrong data when the secondary index has the same column as in the primary key [#25809](https://github.com/pingcap/tidb/issues/25809)
- Fix the issue that `insert ignore on duplicate update` might insert wrong data when the secondary index has the same column with the primary key [#25809](https://github.com/pingcap/tidb/issues/25809)
- Fix the issue that `insert ignore duplicate update` might insert wrong data when a partitioned table has a clustered index [#25846](https://github.com/pingcap/tidb/issues/25846)
- Fix the issue that the query result might be wrong when the key is the `ENUM` type in point get or batch point get [#24562](https://github.com/pingcap/tidb/issues/24562)
- Fix the wrong result that occurs when dividing a `BIT`-type value [#23479](https://github.com/pingcap/tidb/issues/23479)
Expand Down Expand Up @@ -59,8 +59,8 @@ TiDB version: 5.0.4
+ TiDB

- Trigger auto-analyze based on the histogram row count [#24237](https://github.com/pingcap/tidb/issues/24237)
- Do not send requests to a TiFlash node for a period if it has failed and restarted before [#26757](https://github.com/pingcap/tidb/pull/26757)
- Increase the `split region` limit to make `split table` and `presplit` more stable [#26657](https://github.com/pingcap/tidb/pull/26657)
- Stop sending requests to a TiFlash node for a period if the node has failed and restarted before [#26757](https://github.com/pingcap/tidb/pull/26757)
- Increase the `split region` upper limit to make `split table` and `presplit` more stable [#26657](https://github.com/pingcap/tidb/pull/26657)
- Support retry for MPP queries [#26483](https://github.com/pingcap/tidb/pull/26483)
- Check the availability of TiFlash before launching MPP queries [#1807](https://github.com/pingcap/tics/issues/1807)
- Support the stable result mode to make the query result more stable [#26084](https://github.com/pingcap/tidb/pull/26084)
Expand All @@ -76,10 +76,10 @@ TiDB version: 5.0.4
- Handle read ready and write ready separately to reduce read latency [#10475](https://github.com/tikv/tikv/issues/10475)
- Reduce the size of Resolved TS messages to save network bandwidth [#2448](https://github.com/pingcap/ticdc/issues/2448)
- 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)
- The slow log of TiKV coprocessor only considers the time spent on processing requests [#10841](https://github.com/tikv/tikv/issues/10841)
- Make the slow log of TiKV coprocessor only consider the time spent on processing requests [#10841](https://github.com/tikv/tikv/issues/10841)
- Make prewrite as idempotent as possible to reduce the chance of undetermined errors [#10587](https://github.com/tikv/tikv/pull/10587)
- Avoid the false "GC can not work" alert under low write flow [#10662](https://github.com/tikv/tikv/pull/10662)
- The database to be restored always matches the original cluster size during backup. [#10643](https://github.com/tikv/tikv/pull/10643)
- Make the database to be restored always match the original cluster size during backup. [#10643](https://github.com/tikv/tikv/pull/10643)
- Ensure that the panic output is flushed to the log [#9955](https://github.com/tikv/tikv/pull/9955)

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+ PD
Expand All @@ -94,7 +94,7 @@ TiDB version: 5.0.4

+ TiCDC

- Optimize memory management when unified sorter is using memory to sort [#2553](https://github.com/pingcap/ticdc/issues/2553)
- Optimize memory management when Unified Sorter is using memory to sort [#2553](https://github.com/pingcap/ticdc/issues/2553)
- Prohibit operating TiCDC clusters across major or minor versions [#2598](https://github.com/pingcap/ticdc/pull/2598)
- Reduce the goroutine usage when a table's Regions are all transferred away from a TiKV node [#2284](https://github.com/pingcap/ticdc/issues/2284)
- Remove `file sorter` [#2326](https://github.com/pingcap/ticdc/pull/2326)
Expand All @@ -109,7 +109,7 @@ TiDB version: 5.0.4

- Fix the issue that TiDB might panic when querying a partitioned table and the partition key has the `IS NULL` condition [#23802](https://github.com/pingcap/tidb/issues/23802)
- 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 wrong character set and collation for the `case when` function [#26662](https://github.com/pingcap/tidb/issues/26662)
- Fix the wrong character set and collation for the `case when` expression [#26662](https://github.com/pingcap/tidb/issues/26662)
- Fix the issue that committing pessimistic transactions might cause write conflicts [#25964](https://github.com/pingcap/tidb/issues/25964)
- Fix a bug that the index keys in a pessimistic transaction might be repeatedly committed [#26359](https://github.com/pingcap/tidb/issues/26359) [#10600](https://github.com/tikv/tikv/pull/10600)
- Fix the issue that TiDB might panic when resolving the async commit locks [#25778](https://github.com/pingcap/tidb/issues/25778)
Expand All @@ -123,9 +123,9 @@ TiDB version: 5.0.4
- Fix the issue that setting the global variable `dml_batch_size` does not take effect [#24709](https://github.com/pingcap/tidb/issues/24709)
- Fix the issue that using `read_from_storage` and partitioned table at the same time causes an error [#20372](https://github.com/pingcap/tidb/issues/20372)
- Fix the issue that TiDB panics when executing the projection operator [#24264](https://github.com/pingcap/tidb/issues/24264)
- Fix the issue that queries might panic due to statistics [#24061](https://github.com/pingcap/tidb/pull/24061)
- Fix the issue that using the `approx_percentile` function might panic on a `BIT` column [#23662](https://github.com/pingcap/tidb/issues/23662)
- Fix the issue that the metrics on the **Coprocessor Cache** panel are wrong in Grafana [#26338](https://github.com/pingcap/tidb/issues/26338)
- Fix the issue that statistics might cause queries to panic [#24061](https://github.com/pingcap/tidb/pull/24061)
- Fix the issue that using the `approx_percentile` function on a `BIT` column might panic [#23662](https://github.com/pingcap/tidb/issues/23662)
- Fix the issue that the metrics on the **Coprocessor Cache** panel in Grafana are wrong [#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 of wrong query results that occurs when the session variable is used as the `GROUP BY` item [#27106](https://github.com/pingcap/tidb/issues/27106)
- Fix the wrong implicit conversion between `VARCHAR` and timestamp when joining tables [#25902](https://github.com/pingcap/tidb/issues/25902)
Expand All @@ -136,7 +136,7 @@ TiDB version: 5.0.4
?- Fix the issue that snapshot GC might miss GC snapshot files when there is a snapshot file failed to be garbage-collected [#10813](https://github.com/tikv/tikv/issues/10813)
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- Fix potential disk full issue caused by corrupted snapshot files. [#10813](https://github.com/tikv/tikv/issues/10813)

- Fix the TiKV panic issue that occurs when upgrading from a pre-5.0 version with Titan enabled [#10843](https://github.com/tikv/tikv/pull/10843)
- Fix the issue that TiKV of a newer version cannot be rolled back to v5.0.x [#10843](https://github.com/tikv/tikv/pull/10843)
- Fix the TiKV panic issue that occurs when upgrading from a pre-5.0 versions to a 5.0 version or later. If a cluster was upgraded from TiKV v3.x with Titan enabled before the upgrade in the past, this cluster might encounter the issue. [#10774](https://github.com/tikv/tikv/issues/10774)
- Fix the TiKV panic issue that occurs when upgrading from a pre-5.0 version to a 5.0 version or later. If a cluster was upgraded from TiKV v3.x with Titan enabled before the upgrade, this cluster might encounter the issue. [#10774](https://github.com/tikv/tikv/issues/10774)
- Fix the parsing failure caused by the left pessimistic locks [#26404](https://github.com/pingcap/tidb/issues/26404)
- Fix the panic that occurs when calculating duration on certain platforms [#10571](https://github.com/tikv/tikv/pull/10571)
- Fix the issue that the keys of `batch_get_command` in Load Base Split are unencoded [#10542](https://github.com/tikv/tikv/issues/10542)
Expand All @@ -162,7 +162,7 @@ TiDB version: 5.0.4
- Fix the issue of unexpected results when TiFlash fails to establish MPP connections
- Fix the potential panic issue that occurs when resolving locks
- Fix the issue that the store size in metrics is inaccurate under heavy writing
- Fix a bug of incorrect results that occurs when queries contain filters like `CONSTANT` `<` | `<=` | `>` | `>=` `COLUMN`
- Fix a bug of incorrect results that occurs when queries contain filters like `CONSTANT`, `<`, `<=`, `>`, `>=`, or `COLUMN`
- Fix the potential issue that TiFlash cannot garbage-collect the delta data after running for a long time
- Fix a potential bug that metrics display wrong values
- Fix the potential issue of data inconsistency that occurs when TiFlash is deployed on multiple disks
Expand Down