v8.5.4 tikv: update rocksdb.max-manifest-file-size default value (#21689) (#22250)

Author: ti-chi-bot

releases/release-8.5.4.md

@@ -80,6 +80,8 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v8.5/quick-start-with-
     - Deprecated configuration items: [`region-compact-check-interval`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#region-compact-check-interval), [`region-compact-check-step`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#region-compact-check-step), [`region-compact-min-tombstones`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#region-compact-min-tombstones), [`region-compact-tombstones-percent`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#region-compact-tombstones-percent), [`region-compact-min-redundant-rows`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#region-compact-min-redundant-rows-new-in-v710), and [`region-compact-redundant-rows-percent`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#region-compact-redundant-rows-percent-new-in-v710).
     - New configuration items: [`gc.auto-compaction.check-interval`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#check-interval-new-in-v757-and-v854), [`gc.auto-compaction.tombstone-num-threshold`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#tombstone-num-threshold-new-in-v757-and-v854), [`gc.auto-compaction.tombstone-percent-threshold`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#tombstone-percent-threshold-new-in-v757-and-v854), [`gc.auto-compaction.redundant-rows-threshold`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#redundant-rows-threshold-new-in-v757-and-v854), [`gc.auto-compaction.redundant-rows-percent-threshold`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#redundant-rows-percent-threshold-new-in-v757-and-v854), and [`gc.auto-compaction.bottommost-level-force`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#bottommost-level-force-new-in-v757-and-v854).
 
+- Modify the default value of the TiKV configuration item [`max-manifest-file-size`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#max-manifest-file-size) from `128MiB` to `256MiB` to avoid frequent manifest file compactions that could affect overall performance when a single TiKV node contains a large number of SST files. [#18996](https://github.com/tikv/tikv/issues/18996) @[glorv](https://github.com/glorv)
+
 - Add a TiFlash configuration item [`flash.graceful_wait_shutdown_timeout`](https://docs.pingcap.com/tidb/v8.5/tiflash-configuration#graceful_wait_shutdown_timeout-new-in-v854), which controls the maximum wait time when shutting down a TiFlash server. The default value is `600` seconds. During this period, TiFlash continues running unfinished MPP tasks but does not accept new ones. If all running MPP tasks finish before this timeout, TiFlash shuts down immediately; otherwise, it is forcibly shut down after the wait time expires. [#10266](https://github.com/pingcap/tiflash/issues/10266) @[gengliqi](https://github.com/gengliqi)
 
 ### MySQL compatibility

tikv-configuration-file.md

@@ -1252,7 +1252,7 @@ Configuration items related to RocksDB
 ### `max-manifest-file-size`
 
 + The maximum size of a RocksDB Manifest file
-+ Default value: `"128MiB"`
++ Default value: `"256MiB"`. For v8.5.3 and earlier v8.5.x versions, the default value is `"128MiB"`.
 + Minimum value: `0`
 + Unit: B|KiB|MiB|GiB