hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Liang Xie (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7845) optimize hfile index key
Date Thu, 21 Mar 2013 04:45:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13608631#comment-13608631

Liang Xie commented on HBASE-7845:

[~jmspaggi], thanks for your help.
I just appended "-Xmx4096m -Xms4096m" to hbase-env.sh, then start hbase instance, then ran
"bin/hbase org.apache.hadoop.hbase.HFilePerformanceEvaluation" one by one.
Because it'll check file exist and delete/recreate file in each run, so seems to me it didn't
need to restart hbase server between each run.
> optimize hfile index key
> ------------------------
>                 Key: HBASE-7845
>                 URL: https://issues.apache.org/jira/browse/HBASE-7845
>             Project: HBase
>          Issue Type: Improvement
>          Components: HFile
>    Affects Versions: 0.96.0
>            Reporter: Liang Xie
>            Assignee: Liang Xie
>             Fix For: 0.98.0
>         Attachments: HBASE-7845.txt, HBASE-7845-v2.txt, HBASE-7845-v3.txt, HBASE-7845-v4.txt,
HBASE-7845-v5.txt, HBASE-7845-v6.txt, HBASE-7845-v7.txt, HBASE-7845-v8.txt
> Leveldb uses ByteWiseComparatorImpl::FindShortestSeparator() & FindShortSuccessor()
to reduce index key size, it would be helpful under special conditions.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

View raw message