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https://issues.apache.org/jira/browse/TEZ-1734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14201389#comment-14201389
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Hitesh Shah commented on TEZ-1734:
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bq. Then v2 will send V_Start event to itself and send V_SOURCE_VERTEX_RECOVERD
to v3 which would make v3 go to RUNNING, after that when V_Start event is
processed (v2 started), it would send V_SOURCE_VERTEX_STARTED to v3, this cause
the test case failure.
That does not seem right. How does v3 get into a running state if v2 has not
started?
> Vertex's taskNum may be -1 when recovered from NEW to FAILED/KILLED
> -------------------------------------------------------------------
>
> Key: TEZ-1734
> URL: https://issues.apache.org/jira/browse/TEZ-1734
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.5.1
> Reporter: Jeff Zhang
> Assignee: Jeff Zhang
> Attachments: TEZ-1734-2.patch, TEZ-1734.patch
>
>
> When vertex recovered from NEW to FAILED/KILLED, the taskNum may be -1, in
> this case, we don't need to recover its tasks
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