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https://issues.apache.org/jira/browse/MAPREDUCE-7278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17101800#comment-17101800
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Tarun Parimi commented on MAPREDUCE-7278:
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Adding new patch to fix unit test failure. Not sure how to add new unit test to
cover this since this patch ensures the original behavior with speculation
disabled is achieved
> Speculative execution behavior is observed even when
> mapreduce.map.speculative and mapreduce.reduce.speculative are false
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-7278
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7278
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: task
> Affects Versions: 2.8.0
> Reporter: Tarun Parimi
> Priority: Major
> Attachments: MAPREDUCE-7278.001.patch, MAPREDUCE-7278.002.patch,
> Screen Shot 2020-04-30 at 8.04.27 PM.png
>
>
> When a failed task attempt container is stuck in FAIL_FINISHING_CONTAINER
> state for some time, we observe two task attempts are launched simultaneously
> even when speculative execution is disabled.
> This results in the below message shown in the killed attempts, indicating
> speculation has occurred. This is an issue for jobs which require speculative
> execution to be strictly disabled.
> !Screen Shot 2020-04-30 at 8.04.27 PM.png!
>
>
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