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https://issues.apache.org/jira/browse/HBASE-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13261304#comment-13261304
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Hadoop QA commented on HBASE-5848:
----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12524110/5848-addendum-v7.txt
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
-1 findbugs. The patch appears to introduce 5 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:
org.apache.hadoop.hbase.client.TestFromClientSide
org.apache.hadoop.hbase.replication.TestReplication
org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/1641//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/1641//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/1641//console
This message is automatically generated.
> Create table with EMPTY_START_ROW passed as splitKey causes the HMaster to
> abort
> --------------------------------------------------------------------------------
>
> Key: HBASE-5848
> URL: https://issues.apache.org/jira/browse/HBASE-5848
> Project: HBase
> Issue Type: Bug
> Components: client
> Reporter: Lars Hofhansl
> Assignee: ramkrishna.s.vasudevan
> Priority: Minor
> Fix For: 0.94.0, 0.96.0
>
> Attachments: 5848-addendum-v2.txt, 5848-addendum-v3.txt,
> 5848-addendum-v4.txt, 5848-addendum-v5.txt, 5848-addendum-v6.txt,
> 5848-addendum-v7.txt, 5848-addendum-v7.txt, HBASE-5848.patch,
> HBASE-5848.patch, HBASE-5848_0.94.patch, HBASE-5848_addendum.patch
>
>
> A coworker of mine just had this scenario. It does not make sense the
> EMPTY_START_ROW as splitKey (since the region with the empty start key is
> implicit), but it should not cause the HMaster to abort.
> The abort happens because it tries to bulk assign the same region twice and
> then runs into race conditions with ZK.
> The same would (presumably) happen when two identical split keys are passed,
> but the client blocks that. The simplest solution here is to also block
> passed null or EMPTY_START_ROW as split key by the client.
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