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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5848) Create table with EMPTY_START_ROW passed as splitKey causes the HMaster to abort
Date Mon, 23 Apr 2012 22:18:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13260016#comment-13260016
] 

Lars Hofhansl commented on HBASE-5848:
--------------------------------------

Thanks for the patch Ram.

The problem also occurs with 
{code}
createTable(new HTableDescriptor("x"), new byte[][] {HConstants.EMPTY_START_ROW, new byte[]
{1,2,3}});
{code}
I do not think the patch would address that.

                
> 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
>         Attachments: HBASE-5848.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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