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From "Carlo Curino (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-1434) Single Job can affect fairshare of others
Date Thu, 21 Nov 2013 21:31:35 GMT
Carlo Curino created YARN-1434:

             Summary: Single Job can affect fairshare of others
                 Key: YARN-1434
                 URL: https://issues.apache.org/jira/browse/YARN-1434
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager
            Reporter: Carlo Curino
            Priority: Minor

A job receiving containers and deciding not to use them and yielding them back in the next
heartbeat could significantly affect the amount of resources given to other jobs. 

This is because by yielding containers back the job appears always to be under-capacity (more
than others) so it is picked to be the next to receive containers.

Observed by Robert Grandl, to be independently confirmed.

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