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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5220) Expose group resolution time as metric
Date Fri, 20 Dec 2013 00:33:09 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jimmy Xiang updated HDFS-5220:
------------------------------

    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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