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https://issues.apache.org/jira/browse/TEZ-3858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16244554#comment-16244554
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Zhiyuan Yang commented on TEZ-3858:
-----------------------------------
Thanks [~kshukla] for reviewing and committing this!
> Misleading dag level diagnostics in case of invalid vertex event
> ----------------------------------------------------------------
>
> Key: TEZ-3858
> URL: https://issues.apache.org/jira/browse/TEZ-3858
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Zhiyuan Yang
> Assignee: Zhiyuan Yang
> Fix For: 0.9.1
>
> Attachments: TEZ-3858.1.patch, TEZ-3858.2.patch
>
>
> When a vertex gets invalid event, the state machine will be transited by
> InternalErrorTransition. This transition prints this and adds it to dag
> diagnostic:
> {code}
> ("Invalid event " + event.getType() + " on Vertex " +
> vertex.getLogIdentifier()
> {code}
> But variable event here is V_INTERNAL_ERROR event instead of the event that
> caused V_INTERNAL_ERROR. V_INTERNAL_ERROR is not the invalid event, the
> original event is.
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