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https://issues.apache.org/jira/browse/TEZ-3697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15983716#comment-15983716
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Zhiyuan Yang commented on TEZ-3697:
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[~sseth] Sure. For now it should be impossible for a destination vertex to get
VMEvents from multiple outputs of same source task. This would be fixed after
multi-edge feature.
> Adding #output_record in vertex manager event payload
> -----------------------------------------------------
>
> Key: TEZ-3697
> URL: https://issues.apache.org/jira/browse/TEZ-3697
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Zhiyuan Yang
> Assignee: Zhiyuan Yang
> Attachments: TEZ-3697.1.patch
>
>
> This enables estimation of total number of records generated by source
> vertex. The overhead is one more integer per payload.
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