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From "Nicolas Liochon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12450) UserGroupInformation should not log at WARN level if no groups are found
Date Tue, 13 Oct 2015 08:34:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14954620#comment-14954620
] 

Nicolas Liochon commented on HADOOP-12450:
------------------------------------------

+1 (non binding)...

> UserGroupInformation should not log at WARN level if no groups are found
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-12450
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12450
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>            Priority: Minor
>         Attachments: HADOOP-12450-v1.patch, HADOOP-12450-v2.patch
>
>
> HBase tries to get the groups of a user on every request. That user may or may not exist
on the box running Hadoop/HBase.
> If that user doesn't exist currently Hadoop will log at the WARN level everytime. This
leads to gigs of log spam and serious GC issues.



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