MySQL patches by Codership

  1. Series 5.5
  2. Bug #1208493
  3. Comment #5

Comment 5 for bug 1208493

Revision history for this message
Seppo Jaakola (seppo-jaakola) wrote :

Fix, that solves hanging when killed client connection tries to access LOCK_global_system_variables when replication stopping is progressing: http://bazaar.launchpad.net/~codership/codership-mysql/5.5-23/revision/3898

This resource conflict was hurting both MySQL and MariaDB versions. Also hanging in lp:1136571 seems to be due to this deadlock.

Note that this fix introduces a potential race condition, which will surface if there are several connections issuing wsrep_provider=none.