[ 
https://issues.apache.org/jira/browse/HDFS-4676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13626746#comment-13626746
 ] 

Hadoop QA commented on HDFS-4676:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12577673/HDFS-4676.patch
  against trunk revision .

    {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}.  The javadoc tool did not generate any 
warning messages.

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

    {color:green}+1 findbugs{color}.  The patch does not introduce any new 
Findbugs (version 1.3.9) warnings.

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

    {color:green}+1 core tests{color}.  The patch passed unit tests in 
hadoop-hdfs-project/hadoop-hdfs.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: 
https://builds.apache.org/job/PreCommit-HDFS-Build/4209//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4209//console

This message is automatically generated.
                
> TestHDFSFileSystemContract should set MiniDFSCluster variable to null to free 
> up memory
> ---------------------------------------------------------------------------------------
>
>                 Key: HDFS-4676
>                 URL: https://issues.apache.org/jira/browse/HDFS-4676
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>            Priority: Minor
>         Attachments: HDFS-4676.patch
>
>
> TestHDFSFileSystemContract should reset the cluster member to null in order 
> to  make garbage collection quickly collect large chunk of memory associated 
> with MiniDFSCluster. This avoids OutOfMemory errors.
> See 
> https://issues.apache.org/jira/browse/HDFS-4434?focusedCommentId=13624246&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13624246
>  and the next jenkins tests where the OOM was fixed.

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