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https://issues.apache.org/jira/browse/HDFS-6957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe resolved HDFS-6957.
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Resolution: Duplicate
> Allow DFSClient to manually specify that a request should be traced
> -------------------------------------------------------------------
>
> Key: HDFS-6957
> URL: https://issues.apache.org/jira/browse/HDFS-6957
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
>
> Allow the DFSClient to manually specify that a request should be traced. One
> easy way to do this might be to have a configuration property that the
> DFSClient reads which causes it to make all its requests traced. This will
> allow us to more easily diagnose performance problems with a specific file or
> client request type.
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