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From "Bruce Snyder (JIRA)" <>
Subject [jira] Updated: (AMQ-2775) Race condition in org.apache.activemq.util.osgi.Activator
Date Sat, 18 Sep 2010 16:44:06 GMT


Bruce Snyder updated AMQ-2775:

    Fix Version/s: 5.5.0
                       (was: 5.4.1)

> Race condition in org.apache.activemq.util.osgi.Activator
> ---------------------------------------------------------
>                 Key: AMQ-2775
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.3.2
>            Reporter: Michael Pilquist
>             Fix For: 5.5.0
> 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
> 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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