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https://issues.apache.org/jira/browse/MAPREDUCE-7369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17529706#comment-17529706
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Ashutosh Gupta commented on MAPREDUCE-7369:
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[~ste...@apache.org]  I think its been while and the issue seems an interesting 
fix - I am raising the PR. I agree that heartbeats from tasks means liveness 
but given that in this case there is no actual taskStatus, adding a config 
would be good idea.

> 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: Ravuri Sushma sree
>            Priority: Major
>         Attachments: MAPREDUCE-7369.001.patch
>
>
> 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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