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https://issues.apache.org/jira/browse/TEZ-1631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14152759#comment-14152759
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Jeff Zhang commented on TEZ-1631:
---------------------------------
Verify that no issue for master branch. We have resolved it in
[TEZ-1247|https://issues.apache.org/jira/browse/TEZ-1247]
> 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.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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