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https://issues.apache.org/jira/browse/HBASE-15050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ramkrishna.s.vasudevan updated HBASE-15050:
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Attachment: HBASE-15050_3.patch
Patch with test case that clearly highlights the problem. Will commit this
shortly.
> Block Ref counting does not work in Region Split cases.
> -------------------------------------------------------
>
> Key: HBASE-15050
> URL: https://issues.apache.org/jira/browse/HBASE-15050
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.0.0
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Priority: Critical
> Fix For: 2.0.0
>
> Attachments: HBASE-15050.patch, HBASE-15050_1.patch,
> HBASE-15050_2.patch, HBASE-15050_3.patch
>
>
> The reference counting on the blocks does not work correctly when the
> HalfStorefileReader is used for compaction/scans.
> The reason is that getFirstKey and getLastKey API create a new scanner but
> does not do the needed close() call and because of that we do not decrement
> the count on the blocks. The same impact will also be observed on the ref
> count that we maintain on the reader. Issue found when I was trying to test
> some other feature with lot of evictions.
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