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From "Gera Shegalov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-5825) Provide diagnostics for reducers killed during ramp down
Date Thu, 10 Apr 2014 07:34:15 GMT
Gera Shegalov created MAPREDUCE-5825:
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             Summary: Provide diagnostics for reducers killed during ramp down
                 Key: MAPREDUCE-5825
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5825
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: mr-am
            Reporter: Gera Shegalov
            Assignee: Gera Shegalov


Since we operate many queues pretty much at their capacity it some times happens that a failed
mapper causes a reducer ramp down. However, the user can only see "Container killed by the
ApplicationMaster" as a diagnostic message for the task attempt, and have to dig through the
AM log in order to piece things together.



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