[jira] [Commented] (MAPREDUCE-7369) MapReduce tasks timing out when spends more time on MultipleOutputs#close

["Chris Nauroth (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17557094#comment-17557094 ] 

Chris Nauroth commented on MAPREDUCE-7369:
------------------------------------------

[~groot] , thank you for the contribution. [~iwasakims] , thank you for the final review and commit.

> MapReduce tasks timing out when spends more time on MultipleOutputs#close
> -------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-7369
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7369
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 3.3.1
>            Reporter: Prabhu Joseph
>            Assignee: Ashutosh Gupta
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0, 3.3.9
>
>         Attachments: MAPREDUCE-7369.001.patch
>
>          Time Spent: 3.5h
>  Remaining Estimate: 0h
>
> MapReduce tasks timing out when spends more time on MultipleOutputs#close. MultipleOutputs#closes takes more time when there are multiple files to be closed & there is a high latency in closing a stream.
> {code}
> 2021-11-01 02:45:08,312 INFO [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.TaskAttemptImpl: Diagnostics report from attempt_1634949471086_61268_m_001115_0: AttemptID:attempt_1634949471086_61268_m_001115_0 Timed out after 300 secs
> {code}
> MapReduce task timeout can be increased but it is tough to set the right timeout value. The timeout can be disabled with 0 but that might lead to hanging tasks not getting killed.
> The tasks are sending the ping every 3 seconds which are not honored by ApplicationMaster. It expects the status information which won't be send during MultipleOutputs#close. This jira is to add a config which considers the ping from task as part of Task Liveliness Check in the ApplicationMaster.



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