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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3482) hdfs balancer throws ArrayIndexOutOfBoundsException if option is specified without arguments
Date Thu, 05 Jul 2012 21:06:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13407483#comment-13407483
] 

Hadoop QA commented on HDFS-3482:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12535248/HDFS-3482-4.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-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.web.TestWebHdfsWithMultipleNameNodes

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/2743//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/2743//console

This message is automatically generated.
                
> hdfs balancer throws ArrayIndexOutOfBoundsException if option is specified without arguments
> --------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3482
>                 URL: https://issues.apache.org/jira/browse/HDFS-3482
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer
>    Affects Versions: 2.0.0-alpha
>            Reporter: Stephen Chu
>            Assignee: madhukara phatak
>            Priority: Minor
>              Labels: newbie
>         Attachments: HDFS-3482-1.patch, HDFS-3482-2.patch, HDFS-3482-3.patch, HDFS-3482-4.patch,
HDFS-3482-4.patch, HDFS-3482.patch
>
>
> When running the hdfs balancer with an option but no argument, we run into an ArrayIndexOutOfBoundsException.
It's preferable to print the usage.
> {noformat}
> bash-3.2$ hdfs balancer -threshold
> Usage: java Balancer
>     [-policy <policy>]	the balancing policy: datanode or blockpool
>     [-threshold <threshold>]	Percentage of disk capacity
> Balancing took 261.0 milliseconds
> 12/05/31 09:38:46 ERROR balancer.Balancer: Exiting balancer due an exception
> java.lang.ArrayIndexOutOfBoundsException: 1
> 	at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.parse(Balancer.java:1505)
> 	at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.run(Balancer.java:1482)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> 	at org.apache.hadoop.hdfs.server.balancer.Balancer.main(Balancer.java:1555)
> bash-3.2$ hdfs balancer -policy
> Usage: java Balancer
>     [-policy <policy>]	the balancing policy: datanode or blockpool
>     [-threshold <threshold>]	Percentage of disk capacity
> Balancing took 261.0 milliseconds
> 12/05/31 09:39:03 ERROR balancer.Balancer: Exiting balancer due an exception
> java.lang.ArrayIndexOutOfBoundsException: 1
> 	at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.parse(Balancer.java:1520)
> 	at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.run(Balancer.java:1482)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> 	at org.apache.hadoop.hdfs.server.balancer.Balancer.main(Balancer.java:1555)
> {noformat}

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