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https://issues.apache.org/jira/browse/HBASE-11396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14039939#comment-14039939
 ] 

Hadoop QA commented on HBASE-11396:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12651830/HBASE-11396-v1.patch
  against trunk revision .
  ATTACHMENT ID: 12651830

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

    {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: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/9816//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Console output: 
https://builds.apache.org/job/PreCommit-HBASE-Build/9816//console

This message is automatically generated.

> Invalid meta entries can lead to unstartable master
> ---------------------------------------------------
>
>                 Key: HBASE-11396
>                 URL: https://issues.apache.org/jira/browse/HBASE-11396
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.98.3
>            Reporter: Craig Condit
>         Attachments: HBASE-11396-v1.patch
>
>
> Recently I accidentally kill -9'd all regionservers in my cluster (don't 
> ask.. not my finest moment).
> This let to some corruption of the meta table, causing the following 
> exception to be output on the HBase Master during startup, and culminating 
> with the Master aborting:
> {noformat}
> java.lang.IllegalArgumentException: Wrong length: 13, expected 8
>       at 
> org.apache.hadoop.hbase.util.Bytes.explainWrongLengthOrOffset(Bytes.java:600)
>       at org.apache.hadoop.hbase.util.Bytes.toLong(Bytes.java:578)
>       at 
> org.apache.hadoop.hbase.HRegionInfo.getServerName(HRegionInfo.java:1059)
>       at 
> org.apache.hadoop.hbase.HRegionInfo.getHRegionInfoAndServerName(HRegionInfo.java:987)
>       at 
> org.apache.hadoop.hbase.master.AssignmentManager.rebuildUserRegions(AssignmentManager.java:2678)
>       at 
> org.apache.hadoop.hbase.master.AssignmentManager.joinCluster(AssignmentManager.java:465)
>       at 
> org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:910)
>       at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:615)
>       at java.lang.Thread.run(Thread.java:744)
> {noformat}
> No tools that I am aware of were able to clean this up. I added a short patch 
> to catch and log this exception and return null from 
> HRegionInfo.getServerName(). This allowed for startup of the cluster, and 
> hbase hbck to repair the damage.
> Creating ticket to submit patch in case anyone else finds this useful.



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