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Jeff Zhang commented on TEZ-1631:
---------------------------------
bq. This patch looks similar to TEZ-1433-v1.patch on TEZ-1433 right?
Yes
Attach the new patch with unit test refined ( dag successful run in the second submission
)
> 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
> Assignee: Jeff Zhang
> Attachments: Tez-1631-2.patch, Tez-1631-3.patch, Tez-1631-4.patch, Tez-1631.patch
>
>
> 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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