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Posted to mapreduce-dev@hadoop.apache.org by "Peter Bacsko (JIRA)" <ji...@apache.org> on 2017/03/03 16:50:45 UTC

[jira] [Created] (MAPREDUCE-6856) TestRecovery.testSpeculative fails if testCrashed fails

Peter Bacsko created MAPREDUCE-6856:
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             Summary: TestRecovery.testSpeculative fails if testCrashed fails
                 Key: MAPREDUCE-6856
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6856
             Project: Hadoop Map/Reduce
          Issue Type: Bug
            Reporter: Peter Bacsko
            Assignee: Peter Bacsko


The test {{testSpeculative}} in {{org.apache.hadoop.mapreduce.v2.app.TestRecovery}} is unstable.

Based on my findings, the test itself is not problematic. It only fails if {{testCrashed}} in the same class fails before it.

The reason is not completely clear to me, but I whenever I explicitly stop the MRAppMaster in {{testCrashed}} in a finally block, then the issue disappears. I think the reason is that both tests uses the same folder for staging.

Solution: wrap logic in {{testCrashed}} in a try-finally block and then stop the MRAppMaster.



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