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https://issues.apache.org/jira/browse/TEZ-3817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kuhu Shukla updated TEZ-3817:
-----------------------------
    Attachment: TEZ-3817.test.patch

Attaching a "test-only" patch to demonstrate the problem.

> DAGs can hang after more than one uncaught Exception during doTransition.
> -------------------------------------------------------------------------
>
>                 Key: TEZ-3817
>                 URL: https://issues.apache.org/jira/browse/TEZ-3817
>             Project: Apache Tez
>          Issue Type: Bug
>    Affects Versions: 0.7.1, 0.9.0
>            Reporter: Kuhu Shukla
>            Assignee: Kuhu Shukla
>         Attachments: TEZ-3817.test.patch
>
>
> A Tez DAG can hang in the last "sane" state if the 
> statemachine.doTransition() throws a runtime exception more than once. The 
> transition for the Error state itself throws an exception, the DAG hangs. 



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