If a TiKV node crashes, will the regions on it be replicated to other TiKV nodes?

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 一个tikv宕机了，其中的region会在其他的tikv上复制过去嘛？

| username: 近墨者zyl

If one TiKV server fails, will the regions on it be replicated to other TiKVs to form three replicas?

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| username: 啦啦啦啦啦 | Original post link

Yes, but the premise is that after one node goes down, there are still more than 3 KV nodes remaining, and the disk space must be sufficient.

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| username: 近墨者zyl | Original post link

Thank you, got it. So the minimum configuration for TiKV is 4 nodes.

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| username: 啦啦啦啦啦 | Original post link

In fact, the minimum configuration is three nodes. If one out of the three nodes goes down, it won’t affect the cluster usage. However, at this point, you need to manually add a KV node; otherwise, a replica won’t be copied to the same node, which would be meaningless.

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| username: 近墨者zyl | Original post link

Got it, thank you.

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| username: system | Original post link

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