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This topic has been translated from a Chinese forum by GPT and might contain errors.Original topic: tidb5.4.2集群崩溃 SELECT * FROM INFORMATION_SCHEMA.TABLES limit 3 ; ERROR 9005 (HY000): Region is unavailable
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username: heming
Bug Report
Clearly and accurately describe the issue you found. Providing any steps to reproduce the problem can help the development team address the issue promptly.
[TiDB Version]
tidb 5.4.2
[Impact of the Bug]
Cluster crash, users cannot log in.
[Possible Steps to Reproduce]
[Observed Unexpected Behavior]
SELECT * FROM INFORMATION_SCHEMA.TABLES limit 3; ERROR 9005 (HY000): Region is unavailable
[Expected Behavior]
[Related Components and Specific Versions]
All components 5.4.2
[Other Background Information or Screenshots]
Such as cluster topology, system and kernel version, application app information, etc.; if the issue is related to SQL, please provide the SQL statement and related table schema information; if there are critical errors in the node logs, please provide the relevant node log content or files; if some business-sensitive information is inconvenient to provide, please leave your contact information, and we will communicate with you privately.
This morning at 6:57 AM, the upstream ticdc reported an error, indicating that the downstream table could not be found. I logged into the downstream (current crashed cluster) via command line and found that show create table was normal. Around 10 AM, the development team reported that the test application could not log in. It was found that INFORMATION_SCHEMA.TABLES was unavailable.
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