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https://issues.apache.org/jira/browse/HBASE-4375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13107260#comment-13107260
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Jonathan Hsieh commented on HBASE-4375:
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This patch should be good to go for trunk and on 0.90
> [hbck] Add region coverage visualization to hbck
> ------------------------------------------------
>
> Key: HBASE-4375
> URL: https://issues.apache.org/jira/browse/HBASE-4375
> Project: HBase
> Issue Type: New Feature
> Affects Versions: 0.94.0, 0.90.5
> Reporter: Jonathan Hsieh
> Assignee: Jonathan Hsieh
> Attachments:
> 0001-HBASE-4375-Add-region-coverage-visualization-to-hbck.patch
>
>
> After HBASE-4322 and HBASE-4321, we now have an accurate region splits /
> coverage map for properly identifying holes, overlaps, backwards regions and
> other kinds of problems in the .META. table. hbck should display this
> information so that someone can fix this.
> A simple version for a table with regions [,A], [A,B], [A,C], [C,] and would
> dump out something like this (showing an overlap in [A,B])
> : ['table,,..', 'table,A,..']
> A: ['table,A,..', 'B'] ['table,A,..', 'C']
> B: ['table,A,..', 'C']
> C: ['table,C', '']
> null:
> My first thought is '-details' should this dump the full region map including
> all good and bad regions. Without -details, any errors should dump info with
> some context -- dump one region before problems, problem regions, and then
> one post problem region.
> Alternately we could add a new option or options to dump the region split map.
> What is the preferred way to toggle display of this information in hbck?
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