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https://issues.apache.org/jira/browse/HBASE-12282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14189633#comment-14189633
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ramkrishna.s.vasudevan commented on HBASE-12282:
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bq.The impl of BB backed Cell will throw UnsupportedOpException when calling
getxxxArray() right?
Now this would mean that all the KeyValueScanner would be only Cells. And every
where we need to use getXXXBuffer() we will be using hasArray and based on that
use the relevant API.
If we change to BufferedBackedCell in the read path every where then the cases
of memstore will be problematic. Hence we will go with the approach where all
the comparators would decide on how the array or buffer should be used.
> 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
> 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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