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global read lock

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Aikesheng Open Source Community
Aikesheng Open Source Community
Jul 13, 2021 · Databases

Analyzing and Resolving MySQL Global Read‑Lock Deadlocks in Parallel Replication

The article investigates a MySQL 8.0.18 replication deadlock caused by numerous set global read_only commands, explains the lock‑waiting chain involving global read and commit locks, reproduces two deadlock scenarios, and proposes practical solutions such as killing offending sessions or disabling slave_preserve_commit_order.

Deadlockglobal read lockperformance_schema
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Analyzing and Resolving MySQL Global Read‑Lock Deadlocks in Parallel Replication