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https://issues.apache.org/jira/browse/HBASE-4321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13102381#comment-13102381
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[email protected] commented on HBASE-4321:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/1703/
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(Updated 2011-09-11 23:54:04.559005)
Review request for hbase, Todd Lipcon and Michael Stack.
Changes
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Address nits and comments. Applies and passes on 0.90 and trunk.
Summary
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This is the core region split calculator. It provides a sorted set of region
split points, and a "coverage" multimap. This is enough information to
properly determine dupe start keys, all the different kinds of overlap, as well
as holes.
This addresses bug hbase-4321.
https://issues.apache.org/jira/browse/hbase-4321
Diffs (updated)
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src/main/java/org/apache/hadoop/hbase/util/KeyRange.java PRE-CREATION
src/main/java/org/apache/hadoop/hbase/util/RegionSplitCalculator.java
PRE-CREATION
src/test/java/org/apache/hadoop/hbase/util/TestRegionSplitCalculator.java
PRE-CREATION
Diff: https://reviews.apache.org/r/1703/diff
Testing
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Unit tests just checks algorithm, no dependencies on HBase yet.
Thanks,
jmhsieh
> Add more comprehensive region split calculator
> ----------------------------------------------
>
> Key: HBASE-4321
> URL: https://issues.apache.org/jira/browse/HBASE-4321
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.90.4
> Reporter: Jonathan Hsieh
> Assignee: Jonathan Hsieh
> Attachments:
> 0001-HBASE-4321-Add-more-comprehensive-region-split-calcu.patch,
> hbase-4321.diff
>
>
> Hbck currently scans through meta one entry at a time, only keeping a
> reference to the previous meta entry. This is insufficient for capturing all
> the possible problems in meta and needs something more to properly identify
> holes, overlaps, duplicate start keys, and otherwise invalid meta entries.
> Ideally, this calculator could also be used online interrogating an existing
> meta (HBASE-4058), and also used to generate a completely new meta offline
> just from regioninfo and in hdfs (HBASE-3505).
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