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From "Anastasia Braginsky (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14921) Memory optimizations
Date Mon, 20 Jun 2016 07:58:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15339123#comment-15339123
] 

Anastasia Braginsky commented on HBASE-14921:
---------------------------------------------

Yes, 1,280,000 records. 
The slowness at the beginning happens anytime with any implementation (at least when we are
working with YCSB). 
We believe it is related to the warm-up of the system and the clearing from the previous experiment.
We usually disregard this spike as it is not typical only to implementation that is based
on CellArrayMap.

> 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, HBASE-14921-V04-CA.patch,
InitialCellArrayMapEvaluation.pdf, IntroductiontoNewFlatandCompactMemStore.pdf
>
>
> Memory optimizations including compressed format representation and offheap allocations



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