UIMA AS client hangs while handling CPC request
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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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