[jira] [Created] (QPID-4780) HA broker deadlock after loss of primary broker

["Alan Conway (JIRA)" <ji...@apache.org>]

Alan Conway created QPID-4780:
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             Summary:  HA broker deadlock after loss of primary broker
                 Key: QPID-4780
                 URL: https://issues.apache.org/jira/browse/QPID-4780
             Project: Qpid
          Issue Type: Bug
          Components: C++ Clustering
    Affects Versions: 0.20
            Reporter: Alan Conway
            Assignee: Alan Conway


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:

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