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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5848) Create table with EMPTY_START_ROW passed as splitKey causes the HMaster to abort
Date Wed, 25 Apr 2012 05:08:30 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lars Hofhansl updated HBASE-5848:
---------------------------------

      Resolution: Fixed
    Hadoop Flags: Reviewed
          Status: Resolved  (was: Patch Available)

Addendum committed to 0.94 and 0.96.
                
> 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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