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https://issues.apache.org/jira/browse/HBASE-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13261648#comment-13261648
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Zhihong Yu commented on HBASE-5848:
-----------------------------------
Looks like the addendum wasn't applied to trunk.
> 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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