3-Replica Cluster - Two Replicas Fail to Start: region 8 validate state fail

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

Original topic: 3副本集群- 其中两个副本的 启动报错:region 8 validate state fail

| username: MrSylar

[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version]
[Reproduction Path]

[Encountered Problem:
3-replica cluster, abnormal crash during data migration. Starting 2 TiKV instances reports an error, seeking feasible solutions.

[Resource Configuration] Enter TiDB Dashboard - Cluster Info - Hosts and take a screenshot of this page
[Attachments: Screenshots / Logs / Monitoring]

| username: Billmay表妹 | Original post link

First, expand the TiKV, then scale down the faulty TiKV!

| username: Kongdom | Original post link

How many TiKV instances are there in total? If there are 3 TiKV instances, it should be less than half.

| username: zhanggame1 | Original post link

What is the current status of the cluster, and how many are running?

| username: 像风一样的男子 | Original post link

Take a screenshot of the tiup cluster display clustername command.

| username: cassblanca | Original post link

Can you access Grafana?

| username: redgame | Original post link

Data partition conflicts may also lead to data state validation failures.

| username: MrSylar | Original post link

Thank you all. I initially tried using online unsafe recovery to attempt recovery, but it failed. I believe the failure was due to some unspecified usage limitations. In the end, I chose to rebuild the entire cluster.

| username: h5n1 | Original post link

What error did it report upon failure?

| username: system | Original post link

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