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https://issues.apache.org/jira/browse/HADOOP-14515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16066002#comment-16066002
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Xiao Chen commented on HADOOP-14515:
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Log level changes so no test added.
Thanks again, Yongjun. Committing this..
> Specifically configure zookeeper-related log levels in KMS log4j
> ----------------------------------------------------------------
>
> Key: HADOOP-14515
> URL: https://issues.apache.org/jira/browse/HADOOP-14515
> Project: Hadoop Common
> Issue Type: Improvement
> Components: kms
> Affects Versions: 2.6.0
> Reporter: Xiao Chen
> Assignee: Xiao Chen
> Fix For: 2.9.0, 3.0.0-alpha4, 2.8.2
>
> Attachments: HADOOP-14515.01.patch, HADOOP-14515.addendum.patch
>
>
> When investigating a case, we tried to turn on KMS DEBUG by setting the root
> logger in the log4j to DEBUG. This ends up making
> {{org.apache.zookeeper.ClientCnxn}} to generate 199.2M out of a 200M log
> file, which made the kms.log rotate very quickly.
> We should keep zookeeper's log unaffected by the root logger, and only turn
> it on when interested.
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