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When I was testing TiDB, I bumped into the 9001 error. I didn't figure out the cause. How to deal with it?

Zoe
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Lilian Lee
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1 Answers1

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Generally, this error occurs when TiDB fails to access PD. There is a “worker” in the background of TiDB that continuously queries the safepoint from PD. If the query is not successful within 100s, this error is reported.

Possible causes: PD failure or the network issue between TiDB and PD. Solution: Check the state/monitor/log of the PD server and the network between the TiDB server and the PD server.

Caitin Chen
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