diff --git a/how-to/upgrade/using-tiup.md b/how-to/upgrade/using-tiup.md index bf7299f0b553f..1b66a3fefb3f1 100644 --- a/how-to/upgrade/using-tiup.md +++ b/how-to/upgrade/using-tiup.md @@ -148,7 +148,11 @@ This section describes how to perform a rolling update to the TiDB cluster and h tiup cluster upgrade v4.0.0-rc ``` -Performing the rolling update to the cluster will update all components one by one. During the upgrade of TiKV, all leaders in a TiKV instance are evicted before stopping the instance. The default timeout time is 10 minutes. The instance is directly stopped after this timeout time. +Performing the rolling update to the cluster will update all components one by one. During the upgrade of TiKV, all leaders in a TiKV instance are evicted before stopping the instance. The default timeout time is 5 minutes. The instance is directly stopped after this timeout time. + +To perform the upgrade immediately without evicting the leader, specify `--force` in the command above. This method causes performance jitter but not data loss. + +To keep a stable performance, make sure that all leaders in a TiKV instance are evicted before stopping the instance. You can set `--transfer-timeout` to a super large value, for example, `--transfer-timeout 100000000` (unit: second). ### Verify the cluster version