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https://issues.apache.org/jira/browse/UIMA-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Parente updated UIMA-2392:
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Attachment: logs.zip
Logs. Clean = run with timeout set to 0 (infinite). Hang = 2 client runs with
timeout set to 8000ms as in the test case.
> UIMA-AS CAS multiplier hangs fetching empty CAS after client timeouts
> ---------------------------------------------------------------------
>
> Key: UIMA-2392
> URL: https://issues.apache.org/jira/browse/UIMA-2392
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Affects Versions: 2.3.1AS
> Environment: RedHat Enterprise Linux 6.0, Mac OSX Lion 10.7.3
> Reporter: Peter Parente
> Labels: ibm
> Attachments: logs.zip, uima-hang.zip
>
>
> I'm attaching a test case that reproduces the hang. See the README inside the
> zip about how to execute it.
> The annotator (ForwardJCas) consists of a simple CAS multiplier with delays
> in it scaled out in its own thread within 2 levels of aggregates. It receives
> a CAS, sleeps for 3 seconds, gets a new empty CAS, copies information into
> it, sleeps again, and then returns the CAS. The unit test (UimaAsTest)
> initializes 40 UIMA-AS clients with a timeout of 8 seconds, send 1 CAS from
> each to the service, and then waits. After 1-2 runs, the CAS multiplier winds
> up hanging on the getEmptyCas() call in the scaled out annotator.
> What appears to be happening is that free CAS messages are not being sent
> from the client to the service in all cases when the timeouts occur. A
> similar defect (https://issues.apache.org/jira/browse/UIMA-1786) was fixed in
> 2.3.1 with slightly different symptoms.
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