After Enabling performance_schema, Spurious Hangs in Versions of 5.5.22 and Earlier
(Doc ID 1491076.1)
Last updated on NOVEMBER 16, 2021
Applies to:MySQL Server - Version 5.5 to 5.5 [Release 5.5]
Information in this document applies to any platform.
New connections hang. Existing connections cannot run diagnostic queries like SHOW statements, replication related commands.
Shutdown of server will also hang.
The triggering change is performance_schema was recently enabled in my.cnf.
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