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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMQ-2775) Race condition in org.apache.activemq.util.osgi.Activator
Date Fri, 01 Apr 2011 11:22:09 GMT

     [ https://issues.apache.org/jira/browse/AMQ-2775?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gary Tully updated AMQ-2775:
----------------------------

    Fix Version/s:     (was: 5.5.0)
                   5.6.0

> Race condition in org.apache.activemq.util.osgi.Activator
> ---------------------------------------------------------
>
>                 Key: AMQ-2775
>                 URL: https://issues.apache.org/jira/browse/AMQ-2775
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.3.2
>            Reporter: Michael Pilquist
>             Fix For: 5.6.0
>
>
> There's a race condition between start and create methods of Activator.  If a bundle
that was started before activemq-core does something that causes a call to Activator.create,
and Activator.start is still scanning bundles for contributed service files, an IOException
results.
> In practice, this occurred after upgrading from 5.3.0 to 5.3.2 because another bundle
at the same start level as activemq-core programmatically instantiated a broker from a different
thread.  The activemq-core activator was still scanning the installed bundles and hadn't gotten
to itself yet, so the result was a failure to instantiate the tcp handler.
> Making start/create/stop synchronized would fix this issue.

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