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From "clockfly (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7884) ByteBloomFilter's performance can be improved by avoiding multiplication when generating hash
Date Mon, 25 Feb 2013 03:24:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13585591#comment-13585591
] 

clockfly commented on HBASE-7884:
---------------------------------

Test config:
=============
test platform: Intel(R) Core(TM)2 CPU 6300  @ 1.86GHz
JVM: java version "1.6.0_38"
Java(TM) SE Runtime Environment (build 1.6.0_38-b05)
Java HotSpot(TM) 64-Bit Server VM (build 20.13-b02, mixed mode)


                
> ByteBloomFilter's performance can be improved by avoiding multiplication when generating
hash 
> ----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7884
>                 URL: https://issues.apache.org/jira/browse/HBASE-7884
>             Project: HBase
>          Issue Type: Bug
>          Components: Performance
>    Affects Versions: 0.94.5
>            Reporter: clockfly
>            Priority: Minor
>             Fix For: 0.96.0, 0.94.6
>
>         Attachments: bloom_optimization_trunk_patch.patch, bloom_performance_tunning.patch,
hbase-7884-performance-report.pdf, TestByteBloom.java
>
>
> ByteBloomFilter's performance can be optimized by avoiding multiplication operation when
generating hash 

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