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https://issues.apache.org/jira/browse/TEZ-2647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bikas Saha updated TEZ-2647:
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Attachment: TEZ-2647.2.patch
> Add input causality dependency for attempts
> -------------------------------------------
>
> Key: TEZ-2647
> URL: https://issues.apache.org/jira/browse/TEZ-2647
> Project: Apache Tez
> Issue Type: Sub-task
> Reporter: Bikas Saha
> Assignee: Bikas Saha
> Attachments: TEZ-2647.1.patch, TEZ-2647.2.patch
>
>
> Attempts can have input dependencies on the producer task attempts that
> produced the data being consumed by the attempt.
> DataMovement events capture this dependency. In the interest of space, we
> need to be able to capture the dependency that matters - the one that
> provided the last data for the input to complete.
> For starters, we could
> 1) have the system track the last data movement event that was sent to an
> attempt
> 2) then have the inputs be able to report the last relevant data movement
> event
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