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https://issues.apache.org/jira/browse/HBASE-14921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15244900#comment-15244900
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Anastasia Braginsky commented on HBASE-14921:
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bq. The parent ImmutableSegment has to know its subclasses? The enums?

Once there are subclasses of ImmutableSegment, there will be no need in the 
type enum

> Memory optimizations
> --------------------
>
>                 Key: HBASE-14921
>                 URL: https://issues.apache.org/jira/browse/HBASE-14921
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 2.0.0
>            Reporter: Eshcar Hillel
>            Assignee: Anastasia Braginsky
>         Attachments: CellBlocksSegmentInMemStore.pdf, 
> CellBlocksSegmentinthecontextofMemStore(1).pdf, HBASE-14921-V01.patch, 
> HBASE-14921-V02.patch, HBASE-14921-V03.patch, 
> IntroductiontoNewFlatandCompactMemStore.pdf
>
>
> Memory optimizations including compressed format representation and offheap 
> allocations



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