[jira] [Updated] (MAPREDUCE-3528) The task timeout check interval should be configurable independent of mapreduce.task.timeout

["Siddharth Seth (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Siddharth Seth updated MAPREDUCE-3528:
--------------------------------------

    Attachment: MR3528.txt

Trivial patch - introducing a new config param for the timeout check. Not including a unit test.
                
> The task timeout check interval should be configurable independent of mapreduce.task.timeout
> --------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3528
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3528
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mr-am, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Siddharth Seth
>         Attachments: MR3528.txt
>
>
> TaskHeartbeatHandler sleeps for 'mapreduce.task.timeout' - between each check. If a task/NM goes bad immediately after starting a task - the timeout is detected in ~2x the configured timeout interval.

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