[jira] [Commented] (MAPREDUCE-7339) Default Speculator returns speculationValue as TOO_LATE_TO_SPECULATE or PROGRESS_IS_GOOD even if the task is ALREADY_SPECULATING

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18041706#comment-18041706 ] 

ASF GitHub Bot commented on MAPREDUCE-7339:
-------------------------------------------

github-actions[bot] commented on PR #2951:
URL: https://github.com/apache/hadoop/pull/2951#issuecomment-3594031263

   We're closing this stale PR because it has been open for 100 days with no activity. This isn't a judgement on the merit of the PR in any way. It's just a way of keeping the PR queue manageable.
   If you feel like this was a mistake, or you would like to continue working on it, please feel free to re-open it and ask for a committer to remove the stale tag and review again.
   Thanks all for your contribution.




> Default Speculator returns speculationValue as TOO_LATE_TO_SPECULATE or PROGRESS_IS_GOOD even if the task is ALREADY_SPECULATING
> --------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-7339
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7339
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Mudit Sharma
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> DefaultSpeculator implementation in Mapreduce returns some MAGIC numbers in speculationValue if the task is not a good candidate for speculation. It returns these values:
>  
> {noformat}
> returns ALREADY_SPECULATING if that is true. This has priority.
> returns TOO_NEW if our companion task hasn't gotten any information
> returns PROGRESS_IS_GOOD if the task is sailing through
> returns NOT_RUNNING if the task is not running{noformat}
>  
>  
> {color:#172b4d}But there is one bug, due to which even if task is speculating, but if its progress is good or its too late to speculate, code returns TOO_LATE_TO_SPECULATE or PROGRESS_IS_GOOD and not ALREADY_SPECULATING{color}
>  
> {color:#172b4d}Raised PR for the fix: [https://github.com/apache/hadoop/pull/2951]{color}



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