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From "Alan Conway (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (QPID-4285) HA backups continuously disconnect / re-sync after attempting to replicate a deleted queue
Date Tue, 02 Oct 2012 21:55:07 GMT

     [ https://issues.apache.org/jira/browse/QPID-4285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alan Conway resolved QPID-4285.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 0.19
         Assignee: Alan Conway
    
> HA backups continuously disconnect / re-sync after attempting to replicate a deleted
queue
> ------------------------------------------------------------------------------------------
>
>                 Key: QPID-4285
>                 URL: https://issues.apache.org/jira/browse/QPID-4285
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Broker
>    Affects Versions: 0.18
>            Reporter: Jason Dillaman
>            Assignee: Alan Conway
>             Fix For: 0.19
>
>
> Running qmf-stat on the primary broker shows that auto-delete queue XYZ exists, but running
drain against the queue indicates that the queue does not really exist.  QMF is out-of-sync
with the true state of the queue and as a result, the deleted queue was replicated to the
backup broker.  When the backup attempted to subscribe to the queue, it received an error
that the queue was deleted which results in the backup disconnecting/reconnecting to the primary
and re-attempting the state replication.
> Sample log output from backup:
> Sep  4 14:51:26 itcm13 qpidd[10392]: 2012-09-04 14:51:26 [System] error resource-deleted:
Queue XYZ has been deleted. (qpid/broker/Queue.cpp:1787)
> Sep  4 14:51:26 itcm13 qpidd[10392]: 2012-09-04 14:51:26 [Broker] info Inter-broker link
disconnected from 10.3.100.105:9006 Closed by peer
> Sep  4 14:51:28 itcm13 qpidd[10392]: 2012-09-04 14:51:28 [System] info Connecting: 10.3.100.105:9006
> Sample log output from the primary:
> Sep  4 14:18:15 system-node1a-cluster qpidd[8397]: 2012-09-04 14:18:15 [HA] debug Primary:
Known backup connected: host3:9006(ready)
> Sep  4 14:18:15 system-node1a-cluster qpidd[8397]: 2012-09-04 14:18:15 [HA] debug Broker:
Membership add: host3:9006(ready)
> Sep  4 14:18:15 system-node1a-cluster qpidd[8397]: 2012-09-04 14:18:15 [HA] info Broker:
Membership changed: host3:9006(ready) system-node1a-cluster:9006(recovering)
> Sep  4 14:18:16 system-node1a-cluster qpidd[8397]: 2012-09-04 14:18:16 [System] debug
DISCONNECTED [10.3.100.105:9006-10.3.100.13:19841]
> Sep  4 14:18:16 system-node1a-cluster qpidd[8397]: 2012-09-04 14:18:16 [HA] debug Primary:
Backup disconnected: host3:9006(ready)
> Sep  4 14:18:16 system-node1a-cluster qpidd[8397]: 2012-09-04 14:18:16 [HA] debug Broker:
Membership remove: 4ddb3222-e66d-4e6a-8c87-14e1a37332cf
> Sep  4 14:18:16 system-node1a-cluster qpidd[8397]: 2012-09-04 14:18:16 [HA] info Broker:
Membership changed: system-node1a-cluster:9006(recovering)
> Backup bracktrace:
> #0  qpid::broker::Queue::checkNotDeleted (this=0x4d97f70, c=<value optimized out>)
at qpid/broker/Queue.cpp:1787
> #1  0x0000003e1dbf67e4 in qpid::broker::Queue::getNextMessage (this=0x4d97f70, m=...,
c=...) at qpid/broker/Queue.cpp:385
> #2  0x0000003e1dbf688e in qpid::broker::Queue::dispatch (this=<value optimized out>,
c=...) at qpid/broker/Queue.cpp:510
> #3  0x00007f15139e62ba in qpid::ha::ReplicatingSubscription::getNext (q=..., from=...,
result=...) at qpid/ha/ReplicatingSubscription.cpp:116
> #4  0x00007f15139e4ebe in qpid::ha::QueueReplicator::initializeBridge (this=0x3868af0,
bridge=..., sessionHandler=<value optimized out>) at qpid/ha/QueueReplicator.cpp:121

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