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From "Benoy Antony (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11402) Use guava cache to implement negative user-to-group cache
Date Fri, 02 Jan 2015 02:56:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14262729#comment-14262729
] 

Benoy Antony commented on HADOOP-11402:
---------------------------------------

The patch looks good. +1.
I'll commit this on monday if there are no other comments.

> Use guava cache to implement negative user-to-group cache
> ---------------------------------------------------------
>
>                 Key: HADOOP-11402
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11402
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 2.6.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Varun Saxena
>         Attachments: HADOOP-11402.001.patch, HADOOP-11402.002.patch, HADOOP-11402.003.patch,
HADOOP-11402.004.patch
>
>
> Negative user-to-group cache entries are never cleared for never-again-accessed users.
 Use guava cache so that expired entries can be deleted automatically



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