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https://issues.apache.org/jira/browse/YARN-8254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16466853#comment-16466853
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Prabhu Joseph commented on YARN-8254:
-------------------------------------
YarnClient can request setLogLevel for an application using a new api "yarn
application -setLogLevel <fqcn> <logLevel> <appId>" to RM. ResourceManager will
pass it to ApplicationMaster through AllocateResponse.
ApplicationMaster will process the logLevel and pass it to all the task
containers as part of the response to statusUpdate. Needs change in each
application to support this or can simply ignore.
> dynamically change log levels for YARN Jobs
> -------------------------------------------
>
> Key: YARN-8254
> URL: https://issues.apache.org/jira/browse/YARN-8254
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn
> Affects Versions: 2.7.3
> Reporter: Prabhu Joseph
> Priority: Major
> Labels: supportability
>
> Currently the Log Levels for Daemons can be dynamically changed. It will be
> easier while debugging to have same for YARN Jobs. Client can setLogLevel to
> ApplicationMaster which can set it for all the containers.
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