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Date: Wed, 11 Jan 2012 20:08:42 +0000 (UTC)
From: "Jean-Daniel Cryans (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-4440) add an option to presplit table to
 PerformanceEvaluation
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    [ https://issues.apache.org/jira/browse/HBASE-4440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13184342#comment-13184342 ] 

Jean-Daniel Cryans commented on HBASE-4440:
-------------------------------------------

Please create a new jira, carry over some of our conversations we had here to justify it, and leave this jira like it is please.

Good stuff.
                
> add an option to presplit table to PerformanceEvaluation
> --------------------------------------------------------
>
>                 Key: HBASE-4440
>                 URL: https://issues.apache.org/jira/browse/HBASE-4440
>             Project: HBase
>          Issue Type: Improvement
>          Components: util
>            Reporter: Sujee Maniyam
>            Assignee: Sujee Maniyam
>            Priority: Minor
>              Labels: benchmark
>             Fix For: 0.94.0
>
>         Attachments: PerformanceEvaluation.java, PerformanceEvaluation_HBASE_4440.patch, PerformanceEvaluation_HBASE_4440_2.patch
>
>
> PerformanceEvaluation a quick way to 'benchmark' a HBase cluster.  The current 'write*' operations do not pre-split the table.  Pre splitting the table will really boost the insert performance.
> It would be nice to have an option to enable pre-splitting table before the inserts begin.
> it would look something like:
> (a) hbase ...PerformanceEvaluation   --presplit=10 <other options>
> (b) hbase ...PerformanceEvaluation   --presplit <other options>
> (b) will try to presplit the table on some default value (say number of region servers)

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