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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13916) Create MultiByteBuffer
Date Wed, 17 Jun 2015 15:32:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14589928#comment-14589928

stack commented on HBASE-13916:

Patch looks good.

Why BBUtils have ref to MBB?

import org.apache.hadoop.hbase.nio.MultiByteBuffer;

getVLong takes a MBB but it looks like it could take a BB?

Can fix on commit.

Also, remove this sentence on commit (This MBB looks generic, useable perhaps by more than
HFileBlock): "This has to be used when an
36	 * HFileBlock's data is split across multiple byte buffers and we don't want copy them
to single
37	 * for serving cells out of it. "


> Create MultiByteBuffer
> ----------------------
>                 Key: HBASE-13916
>                 URL: https://issues.apache.org/jira/browse/HBASE-13916
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>         Attachments: HBASE-13916.patch, HBASE-13916_V2.patch, HBASE-13916_V3.patch
> This is an aggregation of N ByteBuffers. The block when served directly by block cache
buckets memory, we have the block data split across multiple byte buffers. This aggregate
type (like ByteBuffer) will serve the HFileBlock data.
> This jira wil just provide the new data structure

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