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From "Tassapol Athiapinya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2144) Add logs when preemption occurs
Date Tue, 10 Jun 2014 22:53:02 GMT
Tassapol Athiapinya created YARN-2144:
-----------------------------------------

             Summary: Add logs when preemption occurs
                 Key: YARN-2144
                 URL: https://issues.apache.org/jira/browse/YARN-2144
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: capacityscheduler
    Affects Versions: 2.5.0
            Reporter: Tassapol Athiapinya


There should be easy-to-read logs when preemption does occur. 
1. For debugging purpose, RM should log this.
2. For administrative purpose, RM webpage should have a page to show recent preemption events.

RM logs should have following properties:
* Logs are retrievable when an application is still running and often flushed.
* Can distinguish between AM container preemption and task container preemption with container
ID shown.
* Should be INFO level log.




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