[UIMA-1343] Uima AS aggregate controller should synchronize code that processes CPC replies from delegates

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3AS
• Component/s: Async Scaleout
• Assignee: Unassigned
• Reporter: Jaroslaw Cwiklik
• Created: 07/May/09 19:57
• Updated: 15/Sep/09 14:41
• Resolved: 07/May/09 21:17

Description

Uima AS aggregate allows concurrent processing of CPC replies from its delegates. This creates a problem when two different threads call collectionProcessComplete() on the Flow Controller at the same time. The result is an ArithmeticException: /by zero. The collectionProcessComplete() call should only be done once. Add synchronization to prevent calling collectionProcessComplete() more than once.