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v6.5.4 rocksdb.*cf: supply descriptions on ttl and `periodic-compac…
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…tion-seconds`. (#14312) (#15133) (#15315)
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ti-chi-bot authored Oct 30, 2023
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Expand Up @@ -14,6 +14,7 @@ TiDB 版本:6.5.4
## 兼容性变更

- 为了修复当使用 `Cursor Fetch` 获取大结果集时 TiDB 占用大量内存的问题,TiDB 会自动将结果集写入磁盘以释放内存资源 [#43233](https://github.com/pingcap/tidb/issues/43233) @[YangKeao](https://github.com/YangKeao)
- 默认关闭 RocksDB 的周期性 compaction,使 TiKV RocksDB 的默认行为和 v6.5.0 之前的版本保持一致,避免在升级之后集中产生大量 compaction 影响系统的性能。同时,TiKV 新增 [`rocksdb.[defaultcf|writecf|lockcf].periodic-compaction-seconds`](https://docs.pingcap.com/zh/tidb/v6.5/tikv-configuration-file#periodic-compaction-seconds-从-v654-版本开始引入)[`rocksdb.[defaultcf|writecf|lockcf].ttl`](https://docs.pingcap.com/zh/tidb/v6.5/tikv-configuration-file#ttl-从-v654-版本开始引入) 配置项,支持手动配置 RocksDB 的周期性 compaction [#15355](https://github.com/tikv/tikv/issues/15355) @[LykxSassinator](https://github.com/LykxSassinator)

## 改进提升

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