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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15050) Block Ref counting does not work in Region Split cases.
Date Tue, 29 Dec 2015 11:52:49 GMT
ramkrishna.s.vasudevan created HBASE-15050:
----------------------------------------------

             Summary: 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


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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