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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11402) Negative user-to-group cache entries are never cleared for never-again-accessed users
Date Sun, 21 Dec 2014 23:55:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14255310#comment-14255310
] 

Hadoop QA commented on HADOOP-11402:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12688589/HADOOP-11402.001.patch
  against trunk revision 02b21b7.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 2 new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-common-project/hadoop-common:

                  org.apache.hadoop.security.token.delegation.web.TestWebDelegationToken

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/5329//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HADOOP-Build/5329//artifact/patchprocess/newPatchFindbugsWarningshadoop-common.html
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/5329//console

This message is automatically generated.

> 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
>            Priority: Minor
>         Attachments: HADOOP-11402.001.patch
>
>
> Negative user-to-group cache entries are never cleared for never-again-accessed users.
 We should have a background thread that runs very infrequently and removes these expired
entries.



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