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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14921) Memory optimizations
Date Wed, 27 Apr 2016 08:37:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15259784#comment-15259784
] 

ramkrishna.s.vasudevan commented on HBASE-14921:
------------------------------------------------

I read the last few comments and discussed few things yesterday with Anoop. I think it makes
sense to make things work with CellChunkMap way atleast for the offheap case. We can discuss
on that and decide how we can make that decision.

'Adding seqId' - is also something that can be discussed and if we are aiming at reducing
the onheap overhead caused by a the new CellChunkMap based meta data then better to add the
seqId also to that byte[] or BB that we get from the chunk.

> 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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