[QPID-4780] HA broker deadlock after loss of primary broker

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20
• Fix Version/s: 0.23
• Component/s: C++ Clustering
• Assignee: Alan Conway
• Reporter: Alan Conway
• Created: 26/Apr/13 17:23
• Updated: 08/Sep/13 13:37
• Resolved: 26/Apr/13 17:25

Description

Description of problem:
While fencing nodes in a cluster, occasionally encounter an issue where a previously backup broker becomes deadlocked while deleting auto-delete queues. Only noticed the issue because 'qpid-ha promote' hangs attempting to promote a backup to primary.

Version-Release number of selected component (if applicable):
Qpid 0.18

How reproducible:
Rare (race condition)
see also: https://bugzilla.redhat.com/show_bug.cgi?id=889552

Steps to Reproduce:
1. Start HA-enabled brokers
2. Create tens-of-thousands of auto-delete queues
3. Fence / power-cycle the node hosting the primary broker

Actual results:
Occasionally the backup broker deadlocks

Expected results:
The backup broker does not deadlock

Additional info: