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https://issues.apache.org/jira/browse/HDFS-5220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jimmy Xiang updated HDFS-5220:
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Attachment: hdfs-5220_v2.patch
Attached v2 that initialize and populate the quantile metrics in
UserGroupInformation.setConfiguration, so that we don't change the
UserGroupInformation interface.
> Expose group resolution time as metric
> --------------------------------------
>
> Key: HDFS-5220
> URL: https://issues.apache.org/jira/browse/HDFS-5220
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Rob Weltman
> Assignee: Jimmy Xiang
> Attachments: hdfs-5220.patch, hdfs-5220_v2.patch
>
>
> It would help detect issues with authentication configuration and with
> overloading an authentication source if the name node exposed the time taken
> for group resolution as a metric.
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