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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11402) Negative user-to-group cache entries are never cleared for never-again-accessed users
Date Tue, 06 Jan 2015 14:21:39 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14266147#comment-14266147
] 

Hudson commented on HADOOP-11402:
---------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #1997 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1997/])
HADOOP-11402. Negative user-to-group cache entries are never cleared for never-again-accessed
users. Contributed by Varun Saxena. (benoy: rev 53caeaa16b1450b54e994c77f5d0c8a767b88d57)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/Groups.java
* hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestGroupsCaching.java


> Negative user-to-group cache entries are never cleared for never-again-accessed users
> -------------------------------------------------------------------------------------
>
>                 Key: HADOOP-11402
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11402
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Varun Saxena
>             Fix For: 2.7.0
>
>         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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