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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15050) Block Ref counting does not work in Region Split cases.
Date Tue, 29 Dec 2015 13:18:49 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

ramkrishna.s.vasudevan updated HBASE-15050:
    Status: Patch Available  (was: Open)

> 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
> 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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