Percona XtraDB Cluster moved to https://jira.percona.com/projects/PXC

  1. Bug #1505118
  2. Comment #8

Comment 8 for bug 1505118

Revision history for this message
Przemek (pmalkowski) wrote :

Just wanted to point out exact similarities between the crashes in initial report and examples I posted above.
Firstly, all crashes have some reference to user level locks (ull) functions - mysql_ull_cleanup, ull_get_key, etc, and most if them have MDL lock reference too.

A very similar parts of the initial, second crash and crash from PXC 5.6.24 I mentioned before:

(MDL_lock::Ticket_list::remove_ticket(MDL_ticket*)+0x11)[0x6b5241]
(MDL_lock::remove_ticket(MDL_lock::Ticket_list MDL_lock::*, MDL_ticket*)+0x48)[0x6b5df8]
(MDL_context::release_lock(enum_mdl_duration, MDL_ticket*)+0x1a)[0x6b696a]
(mysql_ull_cleanup(THD*)+0x49)[0x671049]```
vs
/usr/sbin/mysqld(_ZN8MDL_lock11Ticket_list13remove_ticketEP10MDL_ticket+0x3e)[0x6559ce]
/usr/sbin/mysqld(_ZN8MDL_lock13remove_ticketEMS_NS_11Ticket_listEP10MDL_ticket+0x93)[0x658533]
/usr/sbin/mysqld(_ZN11MDL_context12release_lockE17enum_mdl_durationP10MDL_ticket+0x1a)[0x6585da]
/usr/sbin/mysqld(_Z17mysql_ull_cleanupP3THD+0x49)[0x5fbdf9]