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https://issues.apache.org/jira/browse/TEZ-3317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15383436#comment-15383436
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Bikas Saha commented on TEZ-3317:
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Sorry I did not understand whats the issue here from the above comment. Is task
progress = 0 always or occasionally? What the is flow in the buggy situation?
Is it for cases where the processor makes no progress because the input is slow
and because input progress is not available to the processor, it reports 0
progress overall for a long time.
> Speculative execution starts too early due to 0 progress
> --------------------------------------------------------
>
> Key: TEZ-3317
> URL: https://issues.apache.org/jira/browse/TEZ-3317
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Jonathan Eagles
>
> Don't know at this point if this is a tez or a PigProcessor issue. There is
> some setProgress chain that is keeping task progress from being correctly
> reported. Task status is always zero, so as soon as the first task finishes,
> tasks up to the speculation limit are always launched.
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