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https://issues.apache.org/jira/browse/HBASE-17117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashu Pachauri resolved HBASE-17117.
-----------------------------------
Resolution: Cannot Reproduce
After multiple attempts, we could not reproduce this issue. Going close this
due to lack of any further details.
> Reversed scan returns deleted versions and breaks RegionLocator
> ---------------------------------------------------------------
>
> Key: HBASE-17117
> URL: https://issues.apache.org/jira/browse/HBASE-17117
> Project: HBase
> Issue Type: Bug
> Components: Scanners
> Affects Versions: 1.3.0
> Reporter: Ashu Pachauri
> Fix For: 1.3.2
>
> Attachments: reverseScanMetaDeleteFamily.txt
>
>
> We started seeing clients persistently throwing errors as they were trying to
> talk to a region that was non existent (split a few days ago). We verified
> that the region was deleted from meta when the split happened.
> On performing a raw scan on meta, the deleted version for the split region
> appears, which also does on performing a normal reversed scan. Since
> MetaScanner uses a reversed scan, this explains why clients see non existent
> regions.
> We also verified that there was no in-memory corrupt state by failing over
> the master. When we trigger major compaction on meta, the problem goes away
> further confirming the fact that we were seeing deleted versions.
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