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From "Jerry Cwiklik (JIRA)" <uima-...@incubator.apache.org>
Subject [jira] Created: (UIMA-1477) UIMA AS client hangs while handling CPC request
Date Tue, 04 Aug 2009 19:00:15 GMT
UIMA AS client hangs while handling CPC request 

                 Key: UIMA-1477
                 URL: https://issues.apache.org/jira/browse/UIMA-1477
             Project: UIMA
          Issue Type: Bug
          Components: Async Scaleout
            Reporter: Jerry Cwiklik
            Assignee: Jerry Cwiklik

When UIMA AS client is initialized it acquires a CPC semaphore to control when to send a CPC
request. The semaphore is released when a number of CASes sent equals a number of CASes received.
Only when equal the semaphore is released and the CPC request is allowed to be sent. 

In a case when a client is initialized but never sends any CASes this logic fails. The semaphore
is never released causing a hang while trying to acquire a semaphore in collectionProcessComplete().

Add a new test case to replicate the problem.

Fix the code to handle sending CPC from a client that doesnt send CASes to a service.

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