Do not merge until v8.5.4: doc updates for v8.5.4 #21061
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[APPROVALNOTIFIER] This PR is NOT APPROVED This pull-request has been approved by: The full list of commands accepted by this bot can be found here.
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| > * 在升级到 v6.5.0 及以上版本时，请确保 TiDB 的 [`temp-dir`](/tidb-configuration-file.md#temp-dir-从-v630-版本开始引入) 路径已正确挂载了 SSD 磁盘，并确保运行 TiDB 的操作系统用户对该目录有读写权限，否则在运行时可能产生不可预知的问题。该参数是 TiDB 的配置参数，设置后需要重启 TiDB 才能生效。因此，在升级前提前进行设置，可以避免再次重启。 | ||
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| ### `tidb_stats_update_during_ddl` <span class="version-mark">从 v8.5.4 和 v9.0.0 版本开始引入</span> |
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| ### `tidb_stats_update_during_ddl` <span class="version-mark">从 v8.5.4 和 v9.0.0 版本开始引入</span> | |
| ### `tidb_stats_update_during_ddl` <span class="version-mark">从 v8.5.4 版本开始引入</span> |
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Co-authored-by: you06 <[email protected]> Co-authored-by: Grace Cai <[email protected]>
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…hrough jdbc (#21046)
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