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Posted to dev@qpid.apache.org by "Keith Wall (JIRA)" <ji...@apache.org> on 2018/02/21 11:07:00 UTC
[jira] [Commented] (QPID-8106) [Broker-J] [AltBinding] On
virtualhost recovery message "Gave up waiting for Queue 'xxxx' to attain
state" may be written to the log and startup delayed
[ https://issues.apache.org/jira/browse/QPID-8106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16371239#comment-16371239 ]
Keith Wall commented on QPID-8106:
----------------------------------
The problem is that when the queue and exchanges are recovered from the configuration store, the {{postSetAlternateBinding}} methods tries to reunite the object with its alternate binding using {{getAttainedMessageDestination}}. However, the code is defective as at this stage (resolution), the queues and exchanges won't have yet transitioned to their desiredState. This means the configuration thread will block for 5 seconds and then time out, logging the warning. The defect is masked by the effects of the open phase: it also reunites the object with its alternate (AbstractQueue#onOpen), but it uses {{getOpenedMessageDestination}} which does not care about the target object's state.
In general there is some confusion in the code-base about responsibilities of beforeSet/afterSet resolution-time methods and the responsibilities of the open phase.
> [Broker-J] [AltBinding] On virtualhost recovery message "Gave up waiting for Queue 'xxxx' to attain state" may be written to the log and startup delayed
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: QPID-8106
> URL: https://issues.apache.org/jira/browse/QPID-8106
> Project: Qpid
> Issue Type: Bug
> Components: Broker-J
> Affects Versions: qpid-java-broker-7.0.0, qpid-java-broker-7.0.1
> Reporter: Keith Wall
> Priority: Major
> Fix For: qpid-java-broker-7.0.2
>
>
> If as an operator I create a queue or exchange with an alternate binding, on restart of the virtualhost the following message may be seen in the log:
> {noformat}
> 2018-02-21 10:43:52,707 WARN [VirtualHostNode-default-Config] (o.a.q.s.m.AbstractConfiguredObject) - Gave up waiting for Queue 'queue2' to attain state. Check object's state via Management.
> {noformat}
> The startup of the virtualhost is delayed (potentially 5 seconds per queue or exchange with an alternate binding), but there is otherwise no other functional impact. 'Dead lettering' with still operate normally.
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