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Replica parallel workers stuck on "Waiting For Table Metadata Lock" when having MTS enabled (Doc ID 2623029.1)

Last updated on JANUARY 24, 2022

Applies to:

MySQL Server - Version 5.7 and later
Information in this document applies to any platform.

Symptoms

Disclaimer: Starting from v8.0, some terms have been deprecated. Older releases will only use the deprecated terminology, and new releases will only use new terminology. Please see https://dev.mysql.com/doc/mysqld-version-reference/en/ for a complete list of those changes, and in which minor versions it happened.

On Source-Replica replication environment using MTS (slave_parallel_workers > 0), there is a deadlock between replica threads, when it has a replicated transaction that needs to acquire a metadata lock (MDL) like "OPTIMIZE TABLE"

Cause

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In this Document
Symptoms
Cause
Solution
References


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