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From "Matt Corgan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8317) Seek returns wrong result with PREFIX_TREE Encoding
Date Wed, 10 Apr 2013 17:58:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13628044#comment-13628044
] 

Matt Corgan commented on HBASE-8317:
------------------------------------

Thanks for testing out the PREFIX_TREE guys.  I will try to look into this one tonight.  Let
me know if you find anything else before then.
                
> Seek returns wrong result with PREFIX_TREE Encoding
> ---------------------------------------------------
>
>                 Key: HBASE-8317
>                 URL: https://issues.apache.org/jira/browse/HBASE-8317
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.95.0
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>         Attachments: hbase-trunk-8317.patch
>
>
> TestPrefixTreeEncoding#testSeekWithFixedData from the patch could reproduce the bug.
> An example of the bug case:
> Suppose the following rows:
> 1.row3/c1:q1/
> 2.row3/c1:q2/
> 3.row3/c1:q3/
> 4.row4/c1:q1/
> 5.row4/c1:q2/
> After seeking the row 'row30', the expected peek KV is row4/c1:q1/, but actual is row3/c1:q1/.
> I just fix this bug case in the patch, 
> Maybe we can do more for other potential problems if anyone is familiar with the code
of PREFIX_TREE

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