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https://issues.apache.org/jira/browse/HBASE-10638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13916110#comment-13916110
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Hadoop QA commented on HBASE-10638:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12631769/10638-v1.txt
  against trunk revision .
  ATTACHMENT ID: 12631769

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

    {color:red}-1 tests included{color}.  The patch doesn't appear to include 
any new or modified tests.
                        Please justify why no new tests are needed for this 
patch.
                        Also please list what manual steps were performed to 
verify this patch.

    {color:green}+1 hadoop1.0{color}.  The patch compiles against the hadoop 
1.0 profile.

    {color:green}+1 hadoop1.1{color}.  The patch compiles against the hadoop 
1.1 profile.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any 
warning messages.

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

    {color:red}-1 findbugs{color}.  The patch appears to introduce 2 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 lineLengths{color}.  The patch does not introduce lines 
longer than 100

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

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

Test results: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: 
https://builds.apache.org/job/PreCommit-HBASE-Build/8854//console

This message is automatically generated.

> Improve error message when there is no region server available for move
> -----------------------------------------------------------------------
>
>                 Key: HBASE-10638
>                 URL: https://issues.apache.org/jira/browse/HBASE-10638
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 0.98.1, 0.99.0
>
>         Attachments: 10638-v1.txt
>
>
> When there is no region server available to move regions to, we would see:
> {code}
> Valid region move targets:
> TypeError: can't convert nil into String
>         __for__ at /usr/lib/hbase/bin/region_mover.rb:336
>            call at org/jruby/RubyProc.java:270
>            call at org/jruby/RubyProc.java:220
>            each at 
> file:/usr/lib/hbase/lib/jruby-complete-1.6.5.jar!/builtin/java/java.util.rb:7
>   unloadRegions at /usr/lib/hbase/bin/region_mover.rb:333
>          (root) at /usr/lib/hbase/bin/region_mover.rb:471
> {code}
> Better error message / exit code should be provided.



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