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tiflash: add config of enable_version_chain #20347

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tiflash: add config of enable_version_chain #20347

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tiflash: add config of enable_version_chain
JinheLin May 20, 2025
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update
JinheLin May 21, 2025
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7 changes: 7 additions & 0 deletions tiflash/tiflash-configuration.md
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Expand Up @@ -475,6 +475,13 @@ I/O 限流功能相关配置。
- 默认值：`false`
- 可选值：`true`、`false`

##### `enable_version_chain` <span class="version-mark">从 v9.0.0 版本开始引入</span>

- 用于控制 TiFlash 实现 MVCC 过滤的算法。如果设置为 `1`，则使用 VersionChain 算法；如果设置为 `0`，则使用 DeltaIndex 算法。
- VersionChain 算法通过避免对数据进行排序来提升 MVCC 过滤的性能。正常情况下，采用 VersionChain 算法的扫表性能要明显优于 DeltaIndex 算法。
- 默认值：`1`
- 可选值：`1`、`0`

#### security <span class="version-mark">从 v4.0.5 版本开始引入</span>

安全相关配置。
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