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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-5513) HA backup fails if number of replicated queues exceeds number of channels.
Date Mon, 27 Jan 2014 17:09:48 GMT

    [ https://issues.apache.org/jira/browse/QPID-5513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13882969#comment-13882969
] 

ASF subversion and git services commented on QPID-5513:
-------------------------------------------------------

Commit 1561754 from [~aconway] in branch 'qpid/trunk'
[ https://svn.apache.org/r1561754 ]

QPID-5513: HA backup fails if number of replicated queues exceeds number of channels.

Fix link error (incorrect libraries listed) in ha_test_max_queues on windows.

> HA backup fails if number of replicated queues exceeds number of channels.
> --------------------------------------------------------------------------
>
>                 Key: QPID-5513
>                 URL: https://issues.apache.org/jira/browse/QPID-5513
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Clustering
>    Affects Versions: 0.25
>            Reporter: Alan Conway
>            Assignee: Alan Conway
>             Fix For: 0.27
>
>
> HA uses a single link and a session per queue to replicate queue data. That means the
number of replicated queues is limited by the number of channels, which is 32k in current
Qpid.
> To reproduce:
> - create a 2 node cluster.
> - declare 32769 queues
> Actual Result:
> - no error observed by the client declaring the queues or in the primary log.
> - backup broker exits with a critical error saying "not enough channels"
> In the short term it is not straightforward to remove the limit, however the error reporting
needs to be fixed:
> Desired result:
> - client declaring the queues receives a "resource-limit-exceeded" exception with appropriate
message.
> - primary logs an error indicating we exceeded the replicated queue limit
> - primary and backup broker continue to function normally.



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