[TEZ-2426] Ensure the eventRouter thread completes before switching to a new task and thread safety fixes in IPOContexts.

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Fix Version/s: 0.7.0
• Target Version/s: 0.7.0
• Assignee: Siddharth Seth
• Reporter: Bikas Saha
• Created: 07/May/15 00:30
• Updated: 30/Jun/15 04:52
• Resolved: 13/May/15 17:54

Description

Sequence of events
1) Task A starts in a container
2) Task A complete event comes to AM
3) Task B starts in the same container
4) Task A's input calls some method on its context. Crashes with NPE
5) The crash sends an input failed event for Task A to the AM
6) Task A state machine crashes saying cannot handle failed after success

In some cases, it could be that status update event is also sent after completion, though not sure if its related to the failed event being sent.

Issue Links

• relates to: TEZ-2445 Disable the object cleanup in local mode in LogicalIOProcessorRuntimeTask