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Posted to issues@hbase.apache.org by "Ted Yu (Reopened) (JIRA)" <ji...@apache.org> on 2011/12/07 19:06:39 UTC

[jira] [Reopened] (HBASE-4927) CatalogJanior:SplitParentFirstComparator doesn't sort as expected, for the last region when the endkey is empty

     [ https://issues.apache.org/jira/browse/HBASE-4927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ted Yu reopened HBASE-4927:
---------------------------


As we can see from the report here:
https://issues.apache.org/jira/browse/HBASE-4927?focusedCommentId=13163785&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13163785

there were 3 failed tests.
These test failures rippled through all 0.92 builds.
                
> CatalogJanior:SplitParentFirstComparator doesn't sort as expected, for the last region when the endkey is empty
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4927
>                 URL: https://issues.apache.org/jira/browse/HBASE-4927
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.92.0, 0.94.0
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>            Priority: Minor
>             Fix For: 0.92.0
>
>         Attachments: 0001-HBASE-4927-CatalogJanior-SplitParentFirstComparator-.patch, 0001-HBASE-4927-CatalogJanior-SplitParentFirstComparator_v2.patch, hbase-4927-fix-ws.txt
>
>
> When reviewing HBASE-4238 backporting, Jon found this issue.
> What happens if the split points are  (empty end key is the last key, empty start key is the first key)
> Parent     [A,)
> L daughter [A,B), 
> R daughter [B,)
> When sorted, we gets to end key comparision which results in this incorrector order:
> [A,B), [A,), [B,) 
> we wanted:
> [A,), [A,B), [B,)

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