## What Happening

执行失败的 sql ， 匹配以下 TiDB 自身导致的错误：
* ["domain:8027"] Information schema is out of date: schema failed to update in 1 lease, please make sure TiDB can connect to TiKV
* ["executor:8120"] Can not get start ts
* ["kv:8021"] Error: key not exist
* ["kv:8024"]invalid transaction
* ["tikv:9001"]PD server timeout
* ["tikv:9002"]TiKV server timeout
* ["tikv:9003"]TiKV server is busy
* ["tikv:9011"]TiKV max timestamp is not synced
* ["tikv:9012"]TiFlash server timeout
* ["tikv:9013"]TiFlash server is busy
* ["unknown"] Query failed due to an unknown reason

## Related Issues or Alerts
> Parse issue or alert link 

## Diagnosis
> How to investigate the problem

## Solution

* 查看 TiDB 的日志，搜索 error 关键字，查找日志信息报错原因
## Post-Check
> Check issue fixes