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https://issues.apache.org/jira/browse/HBASE-12213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14630092#comment-14630092
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stack commented on HBASE-12213:
-------------------------------
Porting +1 from rb. Fix javadoc before committing. There are some followons on
rb too. Nice work [~ramkrishna.s.vasude...@gmail.com] Add fat release note
talking up new ByteBuff.
> HFileBlock backed by Array of ByteBuffers
> -----------------------------------------
>
> Key: HBASE-12213
> URL: https://issues.apache.org/jira/browse/HBASE-12213
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver, Scanners
> Reporter: Anoop Sam John
> Assignee: ramkrishna.s.vasudevan
> Attachments: HBASE-12213_1.patch, HBASE-12213_10_withBBI.patch,
> HBASE-12213_11_withBBI.patch, HBASE-12213_12_withBBI.patch,
> HBASE-12213_12_withBBI.patch, HBASE-12213_13_withBBI.patch,
> HBASE-12213_14_withBBI.patch, HBASE-12213_2.patch, HBASE-12213_4.patch,
> HBASE-12213_8_withBBI.patch, HBASE-12213_9_withBBI.patch, HBASE-12213_jmh.zip
>
>
> In L2 cache (offheap) an HFile block might have been cached into multiple
> chunks of buffers. If HFileBlock need single BB, we will end up in recreation
> of bigger BB and copying. Instead we can make HFileBlock to serve data from
> an array of BBs.
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