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Posted to dev@activemq.apache.org by "Timothy Bish (JIRA)" <ji...@apache.org> on 2014/12/09 00:21:13 UTC
[jira] [Assigned] (AMQ-5473) Race condition caused by Linkstealing
might make durable subs inactive
[ https://issues.apache.org/jira/browse/AMQ-5473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Timothy Bish reassigned AMQ-5473:
---------------------------------
Assignee: Timothy Bish
> Race condition caused by Linkstealing might make durable subs inactive
> ----------------------------------------------------------------------
>
> Key: AMQ-5473
> URL: https://issues.apache.org/jira/browse/AMQ-5473
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.11.0
> Reporter: AR
> Assignee: Timothy Bish
> Attachments: linksteal_durablesub.patch
>
>
> Link Stealing creates a new connection and disconnects the old connection. These operations are done concurrently.
> New connection triggers addConsumer() for active subscriptions and old connection stop causes removeConsumer() for the same.
> Problems:
> * addConsumer() would throw exception that the sub is already active (if remove did not happen before)
> * even if we go past the exception, it will not set the right (new) connection context and consumer info the subs
> * removeConsumer() may remove subcription even if it had different connection context (created by linkstealing)
> Patch attached.
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