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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-3695) Some improvements to Hbck to test the entire region chain in Meta and provide better error reporting
Date Wed, 04 May 2011 19:31:03 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-3695.
--------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Applied to trunk and branch after trying it up on cluster to make sure its not 'broke'.  Thanks
for the patch Marc.

> Some improvements to Hbck to test the entire region chain in Meta and provide better
error reporting
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-3695
>                 URL: https://issues.apache.org/jira/browse/HBASE-3695
>             Project: HBase
>          Issue Type: Improvement
>          Components: util
>    Affects Versions: 0.90.1
>            Reporter: Marc Limotte
>            Assignee: Marc Limotte
>             Fix For: 0.90.3
>
>
> The current Hbck tool will miss some inconsistencies in Meta, and in other cases will
detect an issue, but does not provide much in the way of useful feedback.  
> * Incorporate the full region chain tests (similar to check_meta.rb). I.e. look for overlaps,
holes and cycles. I believe check_meta.rb will be redundant after this change.
> * More unit tests, and better tests that will test the actual error discovered, instead
of just errors true/false.
> * In the case of overlaps and holes, output both ends of the broken chain.
> * Previous implementation runs check() twice.  This is inefficient and, more importantly,
reports redundant errors which could be confusing to the user.

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