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Posted to mapreduce-issues@hadoop.apache.org by "Ravuri Sushma sree (Jira)" <ji...@apache.org> on 2021/11/23 07:36:00 UTC
[jira] [Commented] (MAPREDUCE-7369) MapReduce tasks timing out when spends more time on MultipleOutputs#close
[ https://issues.apache.org/jira/browse/MAPREDUCE-7369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17447813#comment-17447813 ]
Ravuri Sushma sree commented on MAPREDUCE-7369:
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[~surendralilhore] , Can you please add me as a contributors of MAPREDUCE, I would like to work on this JIRA
> 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: Prabhu Joseph
> Priority: Major
>
> 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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