From 55e31a2ae58278adf045babed0bd1c316321a6cc Mon Sep 17 00:00:00 2001 From: houfaxin Date: Fri, 3 Apr 2026 09:05:28 +0800 Subject: [PATCH 1/3] Update release-8.5.4.md --- releases/release-8.5.4.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/releases/release-8.5.4.md b/releases/release-8.5.4.md index 25dbca58777a6..4f661681dc70a 100644 --- a/releases/release-8.5.4.md +++ b/releases/release-8.5.4.md @@ -86,6 +86,8 @@ Newly created v8.5.3 clusters can be smoothly upgraded to v8.5.4. However, v8.5. | TiKV | | Deprecated | These configuration items are replaced by the [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#gcauto-compaction) configuration group, which controls the automatic compaction behavior. [#18727](https://github.com/tikv/tikv/issues/18727) [@v01dstar](https://github.com/v01dstar) | | TiKV | [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#gcauto-compaction) configuration group: | Newly added | This configuration group controls the automatic compaction behavior. [#18727](https://github.com/tikv/tikv/issues/18727) [@v01dstar](https://github.com/v01dstar) | | TiFlash | [`flash.graceful_wait_shutdown_timeout`](https://docs.pingcap.com/tidb/v8.5/tiflash-configuration#graceful_wait_shutdown_timeout-new-in-v854) | Newly added | Controls the maximum wait time (in seconds) for a graceful TiFlash shutdown. The default value is `600`. When shutting down TiFlash, it continues executing unfinished MPP tasks but no longer accepts new MPP tasks. If all MPP tasks finish before the timeout, TiFlash shuts down immediately; otherwise, it is forcibly shut down after the timeout expires. [#10266](https://github.com/pingcap/tiflash/issues/10266) [@gengliqi](https://github.com/gengliqi) | +| TiCDC | [`scheduler.region-count-per-span`](https://docs.pingcap.com/tidb/v8.5/tiflash-configuration#region-count-per-span-new-in-v854) | Newly added | Introduced in the [TiCDC new architecture](https://docs.pingcap.com/tidb/v8.5/ticdc-architecture). During changefeed initialization, tables that meet the split conditions are split according to this parameter. After splitting, each split sub-table contains at most `region-count-per-span` Regions. The default value is `100`. | +region-count-per-span ### MySQL compatibility From 375bcff5007395c751ebc03a887410c508f65749 Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Fri, 3 Apr 2026 09:10:51 +0800 Subject: [PATCH 2/3] Update releases/release-8.5.4.md Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> --- releases/release-8.5.4.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-8.5.4.md b/releases/release-8.5.4.md index 4f661681dc70a..633512ab29939 100644 --- a/releases/release-8.5.4.md +++ b/releases/release-8.5.4.md @@ -86,7 +86,7 @@ Newly created v8.5.3 clusters can be smoothly upgraded to v8.5.4. However, v8.5. | TiKV | | Deprecated | These configuration items are replaced by the [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#gcauto-compaction) configuration group, which controls the automatic compaction behavior. [#18727](https://github.com/tikv/tikv/issues/18727) [@v01dstar](https://github.com/v01dstar) | | TiKV | [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#gcauto-compaction) configuration group: | Newly added | This configuration group controls the automatic compaction behavior. [#18727](https://github.com/tikv/tikv/issues/18727) [@v01dstar](https://github.com/v01dstar) | | TiFlash | [`flash.graceful_wait_shutdown_timeout`](https://docs.pingcap.com/tidb/v8.5/tiflash-configuration#graceful_wait_shutdown_timeout-new-in-v854) | Newly added | Controls the maximum wait time (in seconds) for a graceful TiFlash shutdown. The default value is `600`. When shutting down TiFlash, it continues executing unfinished MPP tasks but no longer accepts new MPP tasks. If all MPP tasks finish before the timeout, TiFlash shuts down immediately; otherwise, it is forcibly shut down after the timeout expires. [#10266](https://github.com/pingcap/tiflash/issues/10266) [@gengliqi](https://github.com/gengliqi) | -| TiCDC | [`scheduler.region-count-per-span`](https://docs.pingcap.com/tidb/v8.5/tiflash-configuration#region-count-per-span-new-in-v854) | Newly added | Introduced in the [TiCDC new architecture](https://docs.pingcap.com/tidb/v8.5/ticdc-architecture). During changefeed initialization, tables that meet the split conditions are split according to this parameter. After splitting, each split sub-table contains at most `region-count-per-span` Regions. The default value is `100`. | +| TiCDC | [`scheduler.region-count-per-span`](https://docs.pingcap.com/tidb/v8.5/ticdc-changefeed-config#region-count-per-span-new-in-v854) | Newly added | Introduced in the [TiCDC new architecture](https://docs.pingcap.com/tidb/v8.5/ticdc-architecture). During changefeed initialization, TiCDC splits tables that meet the split conditions according to this parameter. Each split sub-table contains at most `region-count-per-span` Regions. The default value is `100`. | region-count-per-span ### MySQL compatibility From 9ce64aec9d96dc8a3476190e0fb7aa11ef31567b Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Fri, 3 Apr 2026 09:38:20 +0800 Subject: [PATCH 3/3] Update releases/release-8.5.4.md --- releases/release-8.5.4.md | 1 - 1 file changed, 1 deletion(-) diff --git a/releases/release-8.5.4.md b/releases/release-8.5.4.md index 633512ab29939..9ad93b4cbd9a0 100644 --- a/releases/release-8.5.4.md +++ b/releases/release-8.5.4.md @@ -87,7 +87,6 @@ Newly created v8.5.3 clusters can be smoothly upgraded to v8.5.4. However, v8.5. | TiKV | [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#gcauto-compaction) configuration group:
  • [`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)
  • [`gc.auto-compaction.bottommost-level-force`](https://docs.pingcap.com/tidb/v8.5/tikv-configuration-file#bottommost-level-force-new-in-v757-and-v854)
| Newly added | This configuration group controls the automatic compaction behavior. [#18727](https://github.com/tikv/tikv/issues/18727) [@v01dstar](https://github.com/v01dstar) | | TiFlash | [`flash.graceful_wait_shutdown_timeout`](https://docs.pingcap.com/tidb/v8.5/tiflash-configuration#graceful_wait_shutdown_timeout-new-in-v854) | Newly added | Controls the maximum wait time (in seconds) for a graceful TiFlash shutdown. The default value is `600`. When shutting down TiFlash, it continues executing unfinished MPP tasks but no longer accepts new MPP tasks. If all MPP tasks finish before the timeout, TiFlash shuts down immediately; otherwise, it is forcibly shut down after the timeout expires. [#10266](https://github.com/pingcap/tiflash/issues/10266) [@gengliqi](https://github.com/gengliqi) | | TiCDC | [`scheduler.region-count-per-span`](https://docs.pingcap.com/tidb/v8.5/ticdc-changefeed-config#region-count-per-span-new-in-v854) | Newly added | Introduced in the [TiCDC new architecture](https://docs.pingcap.com/tidb/v8.5/ticdc-architecture). During changefeed initialization, TiCDC splits tables that meet the split conditions according to this parameter. Each split sub-table contains at most `region-count-per-span` Regions. The default value is `100`. | -region-count-per-span ### MySQL compatibility