releases: add tidb 5.2.2 release notes #7311

qiancai · 2021-10-20T07:42:41Z

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ti-chi-bot · 2021-10-20T07:42:42Z

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rleungx · 2021-10-21T03:34:21Z

releases/release-5.2.2.md

+
+ TiFlash
+
+ PD


- 修复因为超过副本配置数量而错误删除有数据且处于 `pending` 状态的副本的问题 [#4075](https://github.com/tikv/pd/pull/4075) - 修复 `down peer` 无法及时修复的问题 [#4084](https://github.com/tikv/pd/pull/4084) - 修复 `scatter range` 调度器无法对空 `region` 进行调度的问题 [#4118](https://github.com/tikv/pd/pull/4118) - 修复 `key manager` 占用过多 CPU 的问题 [#4153](https://github.com/tikv/pd/pull/4153) - 修复热点调度器变更配置过程中可能存在的数据竞争问题 [#4170](https://github.com/tikv/pd/pull/4170) - 修复 `region syncer` 卡住导致 `leader` 选举慢的问题 [#4220](https://github.com/tikv/pd/pull/4220)

Suggested change

+ PD

+ PD

# TiCDC

## 提升改进

- 将 Kafka sink 配置项默认值由 `MaxMessageBytes` 64MB 改为 1MB，消息因体积过大而被 Kafka Broker 拒收。[#3104](https://github.com/pingcap/ticdc/pull/3104)

- 降低同步链路中的内存占用 [#3037](https://github.com/pingcap/ticdc/pull/3037) [#2726](https://github.com/pingcap/ticdc/pull/2726) [#2642](https://github.com/pingcap/ticdc/pull/2642)

- 优化监控项和告警规则，提升了同步链路、内存 GC、存量数据扫描过程的可观测性。[#2735](https://github.com/pingcap/ticdc/pull/2735) [#2828](https://github.com/pingcap/ticdc/pull/2828) [#3000](https://github.com/pingcap/ticdc/pull/3000 [#3035](https://github.com/pingcap/ticdc/pull/3035) [#3026](https://github.com/pingcap/ticdc/pull/3026)

- 当同步任务状态正常时，不再显示历史上的错误信息，避免误导用户。[#2979]https://github.com/pingcap/ticdc/pull/2979

## Bug 修复

- 修复当上游 TiDB 实例意外退出时，TiCDC 同步任务推进可能停滞的问题。[#3102](https://github.com/pingcap/ticdc/pull/3102)

- 修复 TiCDC 进程 PANIC `tikv reported duplicated request to the same region, which is not expected`。[#3093](https://github.com/pingcap/ticdc/pull/3093)

- 修复在验证下游 TiDB/MySQL 可用性时导致的无意义的 CPU 消耗。[#3077](https://github.com/pingcap/ticdc/pull/3077)

- 修复 TiCDC 产生的 Kafka 消息体积不受 `max-message-size` 约束的问题。[#3049](https://github.com/pingcap/ticdc/pull/3049)

- 修复当写入 Kafka 消息发生错误时，TiCDC 同步任务推进可能停滞的问题。[#3018](https://github.com/pingcap/ticdc/pull/3018)

- 修复当开启 `force-replicate` 时，可能有些没有有效索引的分区表被非预期的忽略的问题。[#2866](https://github.com/pingcap/ticdc/pull/2866)

- 修复当扫描存量数据耗时过长时，可能由于 TiKV 进行 GC 而导致存量数据扫描失败的问题。[#2854](https://github.com/pingcap/ticdc/pull/2854)

- 修复在将某些类型的列编码为 Open Protocol 格式时，TiCDC 进程可能 PANIC `interface conversion: interface {} is string, not []uint8`。[#2784](https://github.com/pingcap/ticdc/pull/2784)

- 修复在将某些类型的列编码为 Avro 格式时，TiCDC 进程可能 PANIC `interface conversion: interface {} is uint64, not int64`。[#2657](https://github.com/pingcap/ticdc/pull/2657)

# TiDB-Binlog

## Bug 修复

- 修复当大部分表被过滤掉时，在某些特殊的负载下，checkpoint 不更新的问题。[#1075](https://github.com/pingcap/tidb-binlog/pull/1075)

releases/release-5.2.2.md

hunterlxt

TiKV

Improvements

简化 L0 层流控算法 #11081
优化 raft client 错误日志的收集 #10983
TiKV coprocessor 慢日志仅统计处理请求所消耗的时间 #10866
当 slogger 线程过载和队列打满的情况下，丢弃日志而非阻塞线程 #10866
加入更多的写入查询统计类型 #10809

Bug Fixes

修复由于 Congest 错误导致的 CDC 频繁增加的 scan 重试 #11092
修复因 channel 打满导致的 raft 断连情况 #11073
修复了 raft client 中 batch 消息过大的问题 #11066
修复了 resolved_ts 中协程泄漏的问题 #11020
修复了当 response 大小超过 4GiB 时 coprocessor panic 的问题 #10993
修复了 snapshot GC 缺失 GC snapshot 文件的问题，该问题发生在当一个 snapshot 文件无法被 GC 的时候 #10874
修复了当处理 copr 请求的时间超出期限后的意外 panic 行为 #10857

releases/release-5.2.2.md

Co-authored-by: Ryan Leung <rleungx@gmail.com>

releases/release-5.2.2.md

ti-chi-bot · 2021-10-29T03:52:53Z

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releases/release-5.2.2.md

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releases/release-5.2.2.md

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releases/release-5.2.2.md

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ti-chi-bot · 2021-10-29T07:38:06Z

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releases/release-5.2.2.md

qiancai · 2021-10-29T08:34:42Z

/merge

ti-chi-bot · 2021-10-29T08:34:44Z

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qiancai · 2021-10-29T08:40:04Z

/merge

ti-chi-bot · 2021-10-29T08:40:07Z

This pull request has been accepted and is ready to merge.

Commit hash: ed1e0b1

ti-chi-bot · 2021-10-29T08:44:09Z

In response to a cherrypick label: new pull request created: #7355.

* add_5.2.2_release_notes * Update release-5.2.2.md * Update releases/release-5.2.2.md * Update releases/release-5.2.2.md Co-authored-by: Ryan Leung <rleungx@gmail.com> * replace pr num with issue num * add_tikv_notes * udpate TiKV & PD parts * update TiKV and PD parts 2 * Update releases/release-5.2.2.md * revise format * Apply suggestions from code review * Apply suggestions from code review Co-authored-by: xixirangrang <hfxsd@hotmail.com> * Apply suggestions from code review Co-authored-by: Enwei <jinenwei@pingcap.com> * Apply suggestions from code review Co-authored-by: xixirangrang <hfxsd@hotmail.com> * Apply suggestions from code review * Apply suggestions from code review Co-authored-by: Xintao <hunterlxt@live.com> Co-authored-by: Ryan Leung <rleungx@gmail.com> * Apply suggestions from code review Co-authored-by: leoppro <i@leop.pro> Co-authored-by: xixirangrang <hfxsd@hotmail.com> * Apply suggestions from code review Co-authored-by: xixirangrang <hfxsd@hotmail.com> * fix ci * Update releases/release-5.2.2.md Co-authored-by: qiancai <qqzczy@126.com> Co-authored-by: Ryan Leung <rleungx@gmail.com> Co-authored-by: Enwei <jinenwei@pingcap.com> Co-authored-by: Liuxiaozhen12 <82579298+Liuxiaozhen12@users.noreply.github.com> Co-authored-by: xixirangrang <hfxsd@hotmail.com> Co-authored-by: Xintao <hunterlxt@live.com> Co-authored-by: leoppro <i@leop.pro>

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releases: add tidb 5.2.2 release notes pingcap/docs#6648

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releases: add tidb 5.2.2 release notes #7311

releases: add tidb 5.2.2 release notes #7311

qiancai commented Oct 20, 2021 •

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-+ PD
++ PD
+# TiCDC
+## 提升改进
+- 将 Kafka sink 配置项默认值由 `MaxMessageBytes` 64MB 改为 1MB，消息因体积过大而被 Kafka Broker 拒收。[#3104](https://github.com/pingcap/ticdc/pull/3104)
+- 降低同步链路中的内存占用 [#3037](https://github.com/pingcap/ticdc/pull/3037) [#2726](https://github.com/pingcap/ticdc/pull/2726) [#2642](https://github.com/pingcap/ticdc/pull/2642)
+- 优化监控项和告警规则，提升了同步链路、内存 GC、存量数据扫描过程的可观测性。[#2735](https://github.com/pingcap/ticdc/pull/2735) [#2828](https://github.com/pingcap/ticdc/pull/2828) [#3000](https://github.com/pingcap/ticdc/pull/3000 [#3035](https://github.com/pingcap/ticdc/pull/3035) [#3026](https://github.com/pingcap/ticdc/pull/3026)
+- 当同步任务状态正常时，不再显示历史上的错误信息，避免误导用户。[#2979]https://github.com/pingcap/ticdc/pull/2979
+## Bug 修复
+- 修复当上游 TiDB 实例意外退出时，TiCDC 同步任务推进可能停滞的问题。[#3102](https://github.com/pingcap/ticdc/pull/3102)
+- 修复 TiCDC 进程 PANIC `tikv reported duplicated request to the same region, which is not expected`。[#3093](https://github.com/pingcap/ticdc/pull/3093)
+- 修复在验证下游 TiDB/MySQL 可用性时导致的无意义的 CPU 消耗。[#3077](https://github.com/pingcap/ticdc/pull/3077)
+- 修复 TiCDC 产生的 Kafka 消息体积不受 `max-message-size` 约束的问题。[#3049](https://github.com/pingcap/ticdc/pull/3049)
+- 修复当写入 Kafka 消息发生错误时，TiCDC 同步任务推进可能停滞的问题。[#3018](https://github.com/pingcap/ticdc/pull/3018)
+- 修复当开启 `force-replicate` 时，可能有些没有有效索引的分区表被非预期的忽略的问题。[#2866](https://github.com/pingcap/ticdc/pull/2866)
+- 修复当扫描存量数据耗时过长时，可能由于 TiKV 进行 GC 而导致存量数据扫描失败的问题。[#2854](https://github.com/pingcap/ticdc/pull/2854)
+- 修复在将某些类型的列编码为 Open Protocol 格式时，TiCDC 进程可能 PANIC `interface conversion: interface {} is string, not []uint8`。[#2784](https://github.com/pingcap/ticdc/pull/2784)
+- 修复在将某些类型的列编码为 Avro 格式时，TiCDC 进程可能 PANIC `interface conversion: interface {} is uint64, not int64`。[#2657](https://github.com/pingcap/ticdc/pull/2657)
+# TiDB-Binlog
+## Bug 修复
+- 修复当大部分表被过滤掉时，在某些特殊的负载下，checkpoint 不更新的问题。[#1075](https://github.com/pingcap/tidb-binlog/pull/1075)

releases: add tidb 5.2.2 release notes #7311

releases: add tidb 5.2.2 release notes #7311

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qiancai commented Oct 20, 2021 • edited by TomShawn Loading

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TiKV

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qiancai commented Oct 20, 2021 •

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