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https://issues.apache.org/jira/browse/TEZ-808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14957683#comment-14957683
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Jason Lowe commented on TEZ-808:
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Sounds pretty good to me. Only suggestion is to have a pure progress() API
that maybe setProgress(float) calls internally. I could see places in the code
where it knows progress is being made but doesn't really know how far along it
is. Separating the concepts makes it easy to sprinkle progress() calls without
accidentally smashing some other code's properly computed progress value.
> Handle task attempts that are not making progress
> -------------------------------------------------
>
> Key: TEZ-808
> URL: https://issues.apache.org/jira/browse/TEZ-808
> Project: Apache Tez
> Issue Type: Sub-task
> Reporter: Bikas Saha
>
> If a task attempt is not making progress then it may cause the job to hang.
> We may want to kill and restart the attempt. With speculation support and
> free resources we may want to run another version in parallel.
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