Percona XtraDB Cluster - HA scalable solution for MySQL

innodb_thread_conccurrency limit can cause node stalling

Reported by Seppo Jaakola on 2013-03-14
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MySQL patches by Codership
Medium
Seppo Jaakola
Percona XtraDB Cluster
Undecided
Unassigned

Bug Description

If innodb_thread_concurrency has been defined to throttle innodb access, and work load contains DDL statements, a cluster node can remain hanging for unresolved MDL conflict.

Changed in codership-mysql:
status: New → In Progress
importance: Undecided → Medium
assignee: nobody → Seppo Jaakola (seppo-jaakola)
milestone: none → 5.5.30-23.7.4
Seppo Jaakola (seppo-jaakola) wrote :

Fix pushed in: http://bazaar.launchpad.net/~codership/codership-mysql/5.5-23/revision/3856

The fix adds new method to cancel a thread waiting for innodb concurrency

Changed in codership-mysql:
status: In Progress → Fix Committed
Changed in percona-xtradb-cluster:
milestone: none → 5.5.30-23.7.4
status: New → Fix Released
Changed in codership-mysql:
status: Fix Committed → Fix Released

The fix for this looks already ported.

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