[MAPREDUCE-5155] Race condition in test case TestFetchFailure cause it to fail

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.3-alpha
• Fix Version/s: 3.0.0-alpha2
• Component/s: test

Environment

Suse x86_64 GNU/Linux
Java(TM) SE Runtime Environment (build 1.6.0_32-b05

• Target Version/s: 2.1.0-beta
• Hadoop Flags: Reviewed
• Assignee: Haibo Chen
• Reporter: Nemon Lou
• Created: 17/Apr/13 04:16
• Updated: 29/Dec/16 19:35
• Resolved: 29/Dec/16 19:00

Description

I run into this once: testFetchFailureWithRecovery(org.apache.hadoop.mapreduce.v2.app.TestFetchFailure): Num completion events not correct expected:<1> but was:<0>

There is a race condition between job.getTaskAttemptCompletionEvents and dealing with JOB_TASK_ATTEMPT_COMPLETED event.
If job.getTaskAttemptCompletionEvents invoked because of task in SUCCEEDED state ,but before JOB_TASK_ATTEMPT_COMPLETED event scheduled,the test case will fail.