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https://issues.apache.org/jira/browse/HDFS-5241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daryn Sharp updated HDFS-5241:
------------------------------

    Status: Patch Available  (was: Open)
    
> Provide alternate queuing audit logger to reduce logging contention
> -------------------------------------------------------------------
>
>                 Key: HDFS-5241
>                 URL: https://issues.apache.org/jira/browse/HDFS-5241
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HDFS-5241.patch
>
>
> The default audit logger has extremely poor performance.  The internal 
> synchronization of log4j causes massive contention between the call handlers 
> (100 by default) which drastically limits the throughput of the NN.

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