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Posted to issues@tez.apache.org by "Bikas Saha (JIRA)" <ji...@apache.org> on 2014/09/29 19:39:33 UTC

[jira] [Created] (TEZ-1631) Session dag submission timeout can result in duplicate DAG submissions

Bikas Saha created TEZ-1631:
-------------------------------

             Summary: Session dag submission timeout can result in duplicate DAG submissions
                 Key: TEZ-1631
                 URL: https://issues.apache.org/jira/browse/TEZ-1631
             Project: Apache Tez
          Issue Type: Bug
    Affects Versions: 0.4.1
            Reporter: Bikas Saha


In TezSession.submitDAG() we could first check if the session is ready and throw a SessionNotRunning exception if that is not the case. This should be done before processing the DAG and thus will prevent unnecessary modification of the DAG.
If the session is ready then we can submit the DAG as usual. Higher level components already handle SessionNotRunning exception.



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