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https://issues.apache.org/jira/browse/CHUKWA-192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12709160#action_12709160
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Jerome Boulon commented on CHUKWA-192:
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Hadoop team is working on writing a secondary copy of the data using log4j
> Chukwa instrumentation slows down JobTracker operations
> -------------------------------------------------------
>
> Key: CHUKWA-192
> URL: https://issues.apache.org/jira/browse/CHUKWA-192
> Project: Hadoop Chukwa
> Issue Type: Bug
> Reporter: Mac Yang
> Assignee: Jerome Boulon
>
> The current JobTracker instrumentation class holds a lock on JobTracker while
> it waits for the JobHistory lock and this causes slow down of JobTracker
> operations.
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