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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5848) Create table with EMPTY_START_ROW passed as splitKey causes the HMaster to abort
Date Sat, 21 Apr 2012 06:00:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13258779#comment-13258779
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ramkrishna.s.vasudevan commented on HBASE-5848:
-----------------------------------------------

@Lars
Oh....we were using these options in one of our scenarios in 0.94. We found no issues, may
be this some other case which is causing the problem. Thanks for bringing in this Lars.  
                
> 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: Lars Hofhansl
>            Priority: Minor
>
> 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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