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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12282) Ensure Cells and its implementations work with Buffers also
Date Mon, 27 Oct 2014 06:12:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14184875#comment-14184875
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Anoop Sam John commented on HBASE-12282:
----------------------------------------

Yep.
When we have seeks we pass the SeekKey backed into a KeyOnlyKV now. May be that also we can
pass in as BB backed Cell.  So in the Compare path we have BB Backed Cells alone. But the
comparator need to make sure it can work with buffer backed also (?)   There is a bit challenge
to make it perfect design.

> Ensure Cells and its implementations work with Buffers also
> -----------------------------------------------------------
>
>                 Key: HBASE-12282
>                 URL: https://issues.apache.org/jira/browse/HBASE-12282
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>    Affects Versions: 0.99.1
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0, 0.99.2
>
>         Attachments: HBASE-12224_2.patch
>
>
> This issue can be used to brainstorm and then do the necessary changes for the offheap
work.  All impl of cells deal with byte[] but when we change the Hfileblocks/Readers to work
purely with Buffers then the byte[] usage would mean that always the data is copied to the
onheap.  Cell may need some interface change to implement this.



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