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v3.0/reference, v2.1/reference, dev/reference: update stats related configuration #1526

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Jul 23, 2019
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v3.0/reference, v2.1/reference, dev/reference: update stats related configuration #1526

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dev/reference: update stats related configuration
alivxxx Jun 27, 2019
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alivxxx Jul 5, 2019
d461b23
Merge branch 'master' of github.com:pingcap/docs-cn into stats
alivxxx Jul 5, 2019
322cf75
address comments
alivxxx Jul 5, 2019
7951710
Merge branch 'master' of https://github.com/pingcap/docs-cn into pr/1526
Jul 10, 2019
94520b6
fix a link issue
Jul 10, 2019
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alivxxx Jul 11, 2019
26b7907
Merge branch 'master' of github.com:pingcap/docs-cn into stats
alivxxx Jul 11, 2019
869ac7d
fix lint
alivxxx Jul 11, 2019
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alivxxx Jul 12, 2019
fb8bc5d
Merge branch 'master' of https://github.com/pingcap/docs-cn into pr/1526
Jul 12, 2019
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Merge branch 'master' of github.com:pingcap/docs-cn into stats
alivxxx Jul 12, 2019
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Merge branch 'stats' of github.com:lamxTyler/docs-cn into stats
alivxxx Jul 12, 2019
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alivxxx Jul 12, 2019
8a4e5d9
address comments
alivxxx Jul 23, 2019
8ac5807
Merge branch 'stats' of github.com:lamxTyler/docs-cn into stats
alivxxx Jul 23, 2019
8a24fd3
Merge branch 'master' of github.com:pingcap/docs-cn into stats
alivxxx Jul 23, 2019
43f424f
remove an extra line about markdownlint
Jul 23, 2019
707ab8b
Merge branch 'stats' of https://github.com/lamxTyler/docs-cn into pr/…
Jul 23, 2019
1ef9cf2
add markdownlint-disable MD001
Jul 23, 2019
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Co-Authored-By: Keke Yi <[email protected]>
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@alivxxx @yikeke
alivxxx and yikeke authored Jul 11, 2019
commit a3b05a6bf4c5e9b343a96bbb92ff55c8f2dbd1ee
6 changes: 4 additions & 2 deletions v2.1/reference/configuration/tidb-server/configuration-file.md
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Expand Up @@ -186,10 +186,12 @@ TiDB 配置文件比命令行参数支持更多的选项。你可以在 [config/

### `enable-update-stats`

> 注：该配置项由 2.1.13 版本中引入，仅在 TiDB 版本大于等于 v2.1.13 的 2.1 版本中支持。
> **注意：**
>
> 该配置项由 2.1.13 版本中引入，仅在 TiDB 版本大于等于 v2.1.13 的 2.1 版本中支持。

+ TiDB 是否做统计信息更新相关操作，例如维护总行数和修改行数，自动 analyze 以及 feedback 等。
+ 默认： true
+ 默认：true
+ 由于统计信息更新操作的周期由 `stats-lease` 决定，因此该参数只在 `stats-lease` 不为 0 的情况下生效。当 enable-update-stats 为 false 时，TiDB 不再自动修改这些表：
- `mysql.stats_meta`：TiDB 不再自动记录事务中对某张表的修改行数，也不会更新到这个系统表中
- `mysql.stats_histograms` 和 `mysql.stats_buckets`：TiDB 不再自动 Analyze，主动更新统计信息
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