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https://issues.apache.org/jira/browse/HADOOP-8751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13445691#comment-13445691
 ] 

Hadoop QA commented on HADOOP-8751:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12543226/HADOOP-8751.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 1 new or modified test 
files.

    +1 javac.  The applied patch does not increase the total number of javac 
compiler warnings.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) 
warnings.

    +1 release audit.  The applied patch does not increase the total number of 
release audit warnings.

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

                  org.apache.hadoop.ha.TestZKFailoverController

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: 
https://builds.apache.org/job/PreCommit-HADOOP-Build/1391//testReport/
Console output: 
https://builds.apache.org/job/PreCommit-HADOOP-Build/1391//console

This message is automatically generated.
                
> NPE in Token.toString() when Token is constructed using null identifier
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-8751
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8751
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.0.0-alpha
>            Reporter: Vlad Rozov
>            Assignee: Vlad Rozov
>            Priority: Minor
>             Fix For: 2.0.0-alpha
>
>         Attachments: HADOOP-8751.patch
>
>
> Token constructor allows null to be passed leading to NPE in 
> Token.toString(). Simple fix is to check for null in constructor and use 
> empty byte arrays.  

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