[UIMA-1477] UIMA AS client hangs while handling CPC request

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3AS
• Component/s: Async Scaleout
• Assignee: Jaroslaw Cwiklik
• Reporter: Jaroslaw Cwiklik
• Created: 04/Aug/09 18:59
• Updated: 11/Sep/09 16:51
• Resolved: 28/Aug/09 19:23

Description

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.