[UIMA-2477] UIMA-AS Not Handling Late Replies Correctly

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.4.0AS
• Component/s: Async Scaleout
• Assignee: Jaroslaw Cwiklik
• Reporter: Jaroslaw Cwiklik
• Created: 11/Oct/12 19:19
• Updated: 18/Oct/12 14:24
• Resolved: 18/Oct/12 14:24

Description

When UIMA-AS aggregate receives late (previously timed out) reply from a remote delegate it tries to drop related Flow object from a FC and subsequently removes a CAS from its cache. This is wrong. Its up to the FC to decide what to do with a timed out CAS. In a scenario when the FC continues with a timed out CAS, current code may cause NPEs in the AE and an unexpected shutdown of the service if action=terminate on Process error. The code should be changed to ignore out-of-band CASes.