releases: add TiDB 5.1.1 release notes #6733

TomShawn · 2021-07-26T07:43:22Z

What is changed, added or deleted? (Required)

add TiDB 5.1.1 release notes

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This PR is translated from: releases: add TiDB 5.1.1 release notes docs#6030
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ti-chi-bot · 2021-07-26T07:43:23Z

[REVIEW NOTIFICATION]

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Liuxiaozhen12

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releases/release-5.1.1.md

solotzg · 2021-07-27T11:38:24Z

releases/release-5.1.1.md

+
+## 改进提升
+
+## Bug 修复


TiFlash

修复处理扫表任务时出现进程崩溃的潜在问题

修复处理 DAG 请求时出现 duplicated region 报错的问题

修复读负载高的情况下进程崩溃的问题

修复执行 DateFormat 函数时出现进程崩溃的潜在问题

修复处理 MPP 任务时出现内存泄漏的潜在问题

修复执行 COUNT 或 COUNT DISTINCT 函数时出现非预期结果的问题

修复多盘部署时出现数据无法恢复的潜在问题

修复 TiDB Dashboard 无法正确显示 TiFlash 磁盘信息的问题

修复析构 SharedQueryBlockInputStream 时出现进程崩溃的潜在问题

修复析构 MPPTask 时出现进程崩溃的潜在问题

releases/release-5.1.1.md

tabokie · 2021-07-28T09:58:28Z

+ TiKV

## 改进提升

    - 提高 prewrite 请求的幂等性以减少不确定性错误的概率 [#10586](https://github.com/tikv/tikv/pull/10586)
    - 预防处理过期请求时的栈溢出风险 [#10502](https://github.com/tikv/tikv/pull/10502)
    - 不使用 stale read 请求的 `start_ts` 更新 `max_ts` 以避免不必要的 commit 请求重试 [#10451](https://github.com/tikv/tikv/pull/10451)
    - 分离处理读写的 ready 状态以减少读延迟 [#10592](https://github.com/tikv/tikv/pull/10592)
    - 降低 I/O 限流器开启后对数据导入速度的影响 [#10390](https://github.com/tikv/tikv/pull/10390)
    - 提升 Raft gRPC 连接的负载均衡 [#10495](https://github.com/tikv/tikv/pull/10495)

## 问题修复

    - 修复某些平台上计时操作触发 panic 的问题 [#10569](https://github.com/tikv/tikv/pull/10569)
    - 修复 load-base-split 误用 `batch_get_command` 中未编码的键 [#10565](https://github.com/tikv/tikv/pull/10565)
    - 修复 `resolved-ts.advance-ts-interval` 在线配置无法立即起效的问题 [#10494](https://github.com/tikv/tikv/pull/10494)
    - 修复在超过 4 副本的罕见场景下 follower 元信息损坏的问题 [#10486](https://github.com/tikv/tikv/pull/10486)
    - 修复加密启用时两次构建快照触发 panic 的问题 [#10464](https://github.com/tikv/tikv/pull/10464)
    - 修正 `tikv_raftstore_hibernated_peer_state` 监控指标项 [#10432](https://github.com/tikv/tikv/pull/10432)
    - 修复 `json_unquote` 使用错误参数类型的问题 [#10428](https://github.com/tikv/tikv/pull/10428)
    - 修复悲观事务中索引键被重复 commit 的问题 [#10586](https://github.com/tikv/tikv/pull/10586)
    - 修复 `ReadIndex` 请求在 leader 迁移后返回过期数据的问题 [#10474](https://github.com/tikv/tikv/pull/10474)

releases/release-5.1.1.md

TomShawn · 2021-07-30T02:17:43Z

releases/release-5.1.1.md

+
+    - 修复了 `tidb_enable_amend_pessimistic_txn=on` 下更改列类型可能出现数据丢失的问题 [#26203](https://github.com/pingcap/tidb/issues/26203)
+    - 修复了 `last_day` 函数的行为在 SQL 模式下不兼容的问题 [#26001](https://github.com/pingcap/tidb/pull/26001)
+    ?- 修复 `LIMIT` 位于窗口函数之上时可能出现的 panic 问题 [#25980](https://github.com/pingcap/tidb/pull/25980)


@eurekaka PTAL this note. Thanks!

releases/release-5.1.1.md

AilinKid · 2021-07-30T06:13:35Z

Rest LGTM

Co-authored-by: Arenatlx <ailinsilence4@gmail.com>

solotzg

LGTM

tabokie

LGTM

ti-chi-bot · 2021-07-30T08:23:17Z

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TomShawn · 2021-07-30T10:40:20Z

/remove-status LGT1
/status LGT2

TomShawn · 2021-07-30T10:40:26Z

/merge

ti-chi-bot · 2021-07-30T10:40:28Z

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

Commit hash: a72c828

ti-chi-bot · 2021-07-30T10:41:43Z

In response to a cherrypick label: new pull request created: #6777.

releases: add TiDB 5.1.1 release notes

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ti-chi-bot added missing-translation-status This PR does not have translation status info. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Jul 26, 2021

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releases: add TiDB 5.1.1 release notes pingcap/docs#6030

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TomShawn requested review from solotzg, Yisaer, overvenus and AilinKid July 27, 2021 07:00

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TomShawn requested a review from liuzix July 28, 2021 03:08

add tiflash notes

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add tools and tikv notes

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TomShawn added 3 commits July 29, 2021 11:39

refine

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Merge remote-tracking branch 'upstream/master' into 5.1.1-rn

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refine tikv, pd, tools, tiflash notes

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TomShawn added 2 commits July 29, 2021 15:25

add tidb notes

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review and rewrite for tidb notes

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Update release-5.1.1.md

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Update releases/release-5.1.1.md

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Co-authored-by: Arenatlx <ailinsilence4@gmail.com>

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releases: add TiDB 5.1.1 release notes (#6733) #6777

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releases: add TiDB 5.1.1 release notes (#6030) pingcap/docs#6065

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releases: add TiDB 5.1.1 release notes (#6733) (#6777)

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releases: add TiDB 5.1.1 release notes #6733

releases: add TiDB 5.1.1 release notes #6733

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releases: add TiDB 5.1.1 release notes #6733

releases: add TiDB 5.1.1 release notes #6733

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TomShawn commented Jul 26, 2021

What is changed, added or deleted? (Required)

Which TiDB version(s) do your changes apply to? (Required)

What is the related PR or file link(s)?

Do your changes match any of the following descriptions?

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