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From "Jerry Cwiklik (JIRA)" <uima-...@incubator.apache.org>
Subject [jira] Closed: (UIMA-1165) Fix a race condition in the UIMA-AS aggregate that results in a hang
Date Fri, 05 Sep 2008 17:18:44 GMT

     [ https://issues.apache.org/jira/browse/UIMA-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jerry Cwiklik closed UIMA-1165.

    Resolution: Fixed

> Fix a race condition in the UIMA-AS aggregate that results in a hang
> --------------------------------------------------------------------
>                 Key: UIMA-1165
>                 URL: https://issues.apache.org/jira/browse/UIMA-1165
>             Project: UIMA
>          Issue Type: Bug
>          Components: Async Scaleout
>            Reporter: Jerry Cwiklik
>         Attachments: uimaj-as-activemq-UIMA-1165-patch.txt, uimaj-as-core-UIMA-1165-patch.txt,
> When running a complex Cas Multiplier Aggregate AS service with a scaled out listener
threads, a race condition occurs that leads to a hang. Specifically, one thread obtains a
number of child CASes produced from an input CAS, than this thread is preempted and another
thread releases one of the child CASes. The parent CAS may not be released from the InProcessCache
leading to CAS pool exhaustion since many CASes are stuck in the InProcessCache waiting to
be released.

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