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https://issues.apache.org/jira/browse/MAPREDUCE-6203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14258228#comment-14258228
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Brahma Reddy Battula commented on MAPREDUCE-6203:
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HI huangyitian,
Turning on log aggregation allows users to easily store container logs in HDFS
and subsequently view them in the YARN web UIs from a central place.
If *yarn.log-aggregation-enable* is disabled try looking for the logs under
each nodemanager that ran the tasks.
The location for this local dir is configured as property
*yarn.nodemanager.log-dirs* in yarn-site.xml
SO if you want to view from JHS and YARN Web UI then enable log aggregation..
> if log-aggregation is enable and run some MR job, the AM log will be
> aggregated.then disable it,then in MR JobHistoryServer and YARN RM UI
> link,the AM log cannot be visible
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-6203
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6203
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobhistoryserver
> Affects Versions: 2.4.1
> Reporter: huangyitian
> Priority: Minor
>
> as the Summary description, I think for the MR JobHistory Server, should not
> let “yarn.log-aggregation-enable” affect the history job,even
> “yarn.log-aggregation-enable” is false.
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