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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12213) HFileBlock backed by Array of ByteBuffers
Date Fri, 17 Jul 2015 08:01:05 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12213?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ramkrishna.s.vasudevan updated HBASE-12213:
-------------------------------------------
      Resolution: Fixed
    Hadoop Flags: Reviewed
          Status: Resolved  (was: Patch Available)

Pushed to master. Will update the release notes shortly.
Thanks for the patient reviews and nice feedbacks [~anoop.hbase] and [~saint.ack@gmail.com].
The javac warnings should be due to the Unsafe method additions.

> 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_final.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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