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Posted to issues@hbase.apache.org by "Mikhail Antonov (JIRA)" <ji...@apache.org> on 2017/04/05 09:44:42 UTC
[jira] [Commented] (HBASE-17117) Reversed scan returns deleted
versions and breaks RegionLocator
[ https://issues.apache.org/jira/browse/HBASE-17117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15956595#comment-15956595 ]
Mikhail Antonov commented on HBASE-17117:
-----------------------------------------
Moving to 1.3.2, not release blocker [~ashu210890]
> 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: 1.3.0
>
> 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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