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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10713) A MemStore implementation with in memory flushes to CellBlocks
Date Tue, 09 Sep 2014 03:24:29 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14126520#comment-14126520
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Enis Soztutar commented on HBASE-10713:
---------------------------------------

This is good stuff, but unscheduling from 0.99.x line for now until we have a trunk patch.
We can then consider this for inclusion based on the patch. 

> A MemStore implementation with in memory flushes to CellBlocks
> --------------------------------------------------------------
>
>                 Key: HBASE-10713
>                 URL: https://issues.apache.org/jira/browse/HBASE-10713
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>
>
> After HBASE-10648 we can plugin any implementation for MemStore. This issue aims at coming
up with an implementation, in which we will have in between in memory flushes. This will reduce
the need to keep lots of KVs in heap as well as in CSLM.  CSLM perform poor when no# items
in it increases.  We can keep create CellBlocks (contigous byte[] like HFile block) out of
KVs and keep it as one object rather than many KVs.  At some point in time, MemStore might
have N CellBlocks and one CSLM.  
> These in memory CellBlocks can be compacted to one bigger block in between. We can target
that in follow on tasks once the basic code is ready.



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