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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10773) Make use of ByteRanges in HFileBlock instead of ByteBuffers
Date Mon, 28 Jul 2014 20:33:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14076787#comment-14076787
] 

stack commented on HBASE-10773:
-------------------------------

If we go BR throughout the read path, what happens when we want to move read blocks from dfsclient
to blockcache without bringing the blocks onheap: http://grepcode.com/file/repo1.maven.org/maven2/org.apache.hadoop/hadoop-common/2.4.0/org/apache/hadoop/fs/HasEnhancedByteBufferAccess.java#HasEnhancedByteBufferAccess
Would that be internal to the blockcache implementation?  It could be all BB but its APIs
would be BR based?

> Make use of ByteRanges in HFileBlock instead of ByteBuffers
> -----------------------------------------------------------
>
>                 Key: HBASE-10773
>                 URL: https://issues.apache.org/jira/browse/HBASE-10773
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>
> Replacing BBs with Byte Ranges  in block cache as part of HBASE-10772, would help in
replacing BBs with BRs in HFileBlock also.



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