hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15514) Single (or small number) of Column Family(ies) in Mutation optimization
Date Tue, 22 Mar 2016 06:17:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15205870#comment-15205870
] 

Anoop Sam John commented on HBASE-15514:
----------------------------------------

At least in server side we can avoid and having things like CellBlock or cell array?  Because
there the cells are coming in order. 
In a recent PE test I noticed this. The BufferedMutator having a 2 MB flush size. But the
actual data coming to RS is not even 1 MB in size !!
So in server side also we add up all these extra Java object overhead !!!

> Single (or small number) of Column Family(ies) in Mutation optimization
> -----------------------------------------------------------------------
>
>                 Key: HBASE-15514
>                 URL: https://issues.apache.org/jira/browse/HBASE-15514
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>
> familyMap in Mutation class is TreeMap<byte[], List<Cell>>. Overhead of TreeMap
- 48 bytes, TreeMap$Entry - 40 bytes. 



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message