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https://issues.apache.org/jira/browse/HBASE-15786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15669789#comment-15669789
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Anoop Sam John commented on HBASE-15786:
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bq.We need to work on moving mslab and chunk etc. out to a memory module? Move
things like MemStoreLABImpl out of regionserver package?
You said in other issue that u will work on that.. If u r busy, I can check it
. Let me know.. But not as part of this issue.. This is already big in size.
> Create DBB backed MSLAB pool
> ----------------------------
>
> Key: HBASE-15786
> URL: https://issues.apache.org/jira/browse/HBASE-15786
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver
> Reporter: ramkrishna.s.vasudevan
> Assignee: Anoop Sam John
> Fix For: 2.0.0
>
> Attachments: HBASE-15786.patch
>
>
> We can make use of MSLAB pool for this off heap memstore.
> Right now one can specify the global memstore size (heap size) as a % of max
> memory using a config. We will add another config with which one can specify
> the global off heap memstore size. This will be exact size not as %. When off
> heap memstore in use, we will give this entire area for the MSLAB pool and
> that will create off heap chunks. So when cells are added to memstore, the
> cell data gets copied into the off heap MSLAB chunk spaces. Note that when
> the pool size is not really enough and we need additional chunk creation, we
> wont use off heap area for that. We dony want to create so many on demand
> DBBs.
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