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https://issues.apache.org/jira/browse/HBASE-20001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368013#comment-16368013
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Thiruvel Thirumoolan commented on HBASE-20001:
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[~chia7712] - Yes. We lost data on our test clusters. Daughters were in
SPLITTING_NEW state and since there was no meta entry for the encoded name
(bcoz of this bug), the daughter region directories on HDFS were removed.
Catalog Janitor didn't find split references and removed the parent too,
causing hbck to complain of region hole.
> cleanIfNoMetaEntry() uses encoded instead of region name to lookup region
> -------------------------------------------------------------------------
>
> Key: HBASE-20001
> URL: https://issues.apache.org/jira/browse/HBASE-20001
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.2.0, 1.3.0, 1.4.0, 1.1.7
> Reporter: Francis Liu
> Assignee: Thiruvel Thirumoolan
> Priority: Major
> Fix For: 1.3.2, 1.5.0, 1.4.3
>
> Attachments: HBASE-20001.branch-1.4.001.patch
>
>
> In RegionStates.cleanIfNoMetaEntry()
> {{if (MetaTableAccessor.getRegion(server.getConnection(),
> hri.getEncodedNameAsBytes()) == null) {}}
> {{regionOffline(hri);}}
> {{FSUtils.deleteRegionDir(server.getConfiguration(), hri);}}
> }
> But api expects regionname
> {{public static Pair<HRegionInfo, ServerName> getRegion(Connection
> connection, byte [] regionName)}}
> So we might end up cleaning good regions.
>
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