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https://issues.apache.org/jira/browse/AMBARI-11128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Onischuk resolved AMBARI-11128.
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Resolution: Fixed
Committed to trunk and branch-2.1
> Add EWMA to yarn log4j appenders in Dal
> ---------------------------------------
>
> Key: AMBARI-11128
> URL: https://issues.apache.org/jira/browse/AMBARI-11128
> Project: Ambari
> Issue Type: Bug
> Reporter: Andrew Onischuk
> Assignee: Andrew Onischuk
> Fix For: 2.1.0
>
>
> We've added support for viewing errors and warnings information in the
> RM/NM/ATS web UI in Dal. To enable the functionality, the appender EWMA has to
> be added to the logger. This can be achieved by appending it to the
> YARN_ROOT_LOGGER environment variable(if the current value is "INFO,RFA", it
> should be set to "INFO,RFA,EWMA".
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