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releases: add tidb 5.0.1 release notes #6061

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releases: add tidb 5.0.1 release notes #6061

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releases: add tidb 5.0.1 release notes
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1 change: 1 addition & 0 deletions TOC.md
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Expand Up @@ -527,6 +527,7 @@
+ [发布版本汇总](/releases/release-notes.md)
+ [产品路线图](/roadmap.md)
+ v5.0
- [5.0.1](/releases/release-5.0.1.md)
- [5.0 GA](/releases/release-5.0.0.md)
- [5.0.0-rc](/releases/release-5.0.0-rc.md)
+ v4.0
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17 changes: 17 additions & 0 deletions releases/release-5.0.1.md
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@@ -0,0 +1,17 @@
---
title: TiDB 5.0.1 Release Notes
---

# TiDB 5.0.1 Release Notes

发版日期：2021 年 4 月 23 日
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TiDB 版本：5.0.1

## 兼容性更改

## 新功能

## 改进提升

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  • TiKV
    • 使用 zstd 压缩 Region Snapshot #10005

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@3pointer 3pointer Apr 20, 2021 •
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+Tools
- BR
* 删除 summary 日志中一些容易误解的信息. [#1009](https://github.com/pingcap/br/pull/1009)

## Bug 修复
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## Bug 修复
## Bug 修复
+ TiKV
- 修复了 coprocessor 的 IN 表达式未正确处理 unsigned/signed int 类型数据的问题 [#10018](https://github.com/tikv/tikv/pull/10018)
- 修复了在 batch ingest SST 之后产生大量空 Region 的问题 [#10015](https://github.com/tikv/tikv/pull/10015)
- 修复了 `cast_string_as_time` 输入非法的 UTF-8 值之和导致 panic 的问题 [#9995](https://github.com/tikv/tikv/pull/9995)
- 修复了“文件目录”文件损坏之后 TiKV 无法启动的问题 [#9992](https://github.com/tikv/tikv/pull/9992)

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@winoros winoros Apr 20, 2021 •
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## Bug 修复
## Bug 修复
+ TiDB
- 修复投影消除在投影结果为空时执行结果可能错误的问题 [#24093](https://github.com/pingcap/tidb/pull/24093)
- 修复某些情况下列允许为 NULL 时执行结果可能错误的问题 [#24063](https://github.com/pingcap/tidb/pull/24063)
- 当有虚拟列参与运算时不允许生成 MPP 计划 [#24058](https://github.com/pingcap/tidb/pull/24058)
- 修复 Plan Cache 中对 PointGet 和 TableDual 错误的重复使用 [#24043](https://github.com/pingcap/tidb/pull/24043)
- IndexMerge 算子需要保留聚簇索引的输出 [#24042](https://github.com/pingcap/tidb/pull/24042)
- 修复 BIT 类型相关的错误的类型推导 [#24027](https://github.com/pingcap/tidb/pull/24027)
- 修复某些优化器 hint 在 PointGet 算子存在时无法生效的问题 [#23685](https://github.com/pingcap/tidb/pull/23685)
- 修复某些情况下 DDL job 在将状态设置外 rolling back 时可能的参数解析失败的问题 [#24080](https://github.com/pingcap/tidb/pull/24080)
- 修复二进制字面值常量的索引范围构造错误的问题 [#24041](https://github.com/pingcap/tidb/pull/24041)
- 修复某些情况下 IN 语句执行结果可能错误的问题 [#24023](https://github.com/pingcap/tidb/pull/24023)
- 修复某些字符串函数返回结果错误的问题 [#23879](https://github.com/pingcap/tidb/pull/23879)
- 执行 REPLACE 语句需要用户同时拥有 INSERT 和 DELETE 的权限 [#23939](https://github.com/pingcap/tidb/pull/23939)
- 修复点差时的性能回退 [#24070](https://github.com/pingcap/tidb/pull/24070)

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  • TiFLash

    • 修复存储引擎无法删除某些范围数据的问题
    • 修复 time 转换为 int 时产生错误结果的问题
    • 修复 receiver 可能无法在 10 秒内找到对应任务的问题
    • 修复 cancelMPPQuery 中可能存在无效迭代器的问题
    • 修复 bitwise 操作和 TiDB 行为不一致的问题
    • 修复当使用 prefix key 时出现范围重叠报错的问题
    • 修复字符串转换为 int 时产生错误结果的问题
    • 修复连续快速写入可能导致 TiFlash OOM 的问题
    • 修复列名重复会引发报错的问题
    • 修复 MPP 执行计划无法被解析的问题
    • 修复 Table GC 时会引发空指针的问题
    • 修复向已被删除的表写数据时 TiFlash 进程崩溃的问题
    • 修复当使用 BR Restore 时 TiFlash 进程崩溃的问题

1 change: 1 addition & 0 deletions releases/release-notes.md
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Expand Up @@ -9,6 +9,7 @@ TiDB 历史版本发布声明如下：

## 5.0

- [5.0.1](/releases/release-5.0.1.md)
- [5.0 GA](/releases/release-5.0.0.md)
- [5.0.0-rc](/releases/release-5.0.0-rc.md)

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