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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10007) PerformanceEvaluation: Add sampling and latency collection to randomRead test
Date Wed, 20 Nov 2013 19:24:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13828011#comment-13828011

Nick Dimiduk commented on HBASE-10007:

Okay [~jmspaggi] I'll post a patch for 0.94 as well. We can address bringing 0.94's version
up to feature parity with 0.96/trunk in a separate ticket.

Yes, [~apurtell], I considered that. I'm not a statistician, so I don't know if that approach
would be sufficient to keep tabs on the extremes. I'm also interested to pursue the technique
employed by Gil's [LatencyUtils|http://latencyutils.github.io/LatencyUtils/] project. Unless
someone has immediate advice on the sampling implementation, I'd prefer to implement this
as a separate ticket.

> PerformanceEvaluation: Add sampling and latency collection to randomRead test
> -----------------------------------------------------------------------------
>                 Key: HBASE-10007
>                 URL: https://issues.apache.org/jira/browse/HBASE-10007
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance, test
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>            Priority: Minor
>             Fix For: 0.98.0, 0.96.1
>         Attachments: HBASE-10007-0.96.00.patch, HBASE-10007-0.96.01.patch, HBASE-10007.00.patch
> As I mentioned over on HBASE-9940, I'd like to have randomRead operate only on a sample
of the total dataset. It would also be useful to collect latency measurements from individual
responses. Throughput times are aggregated according to the amount of user data processed
and the result is reported as well. This is a patch I've been using for some performance tests
I've run -- maybe it'll be useful to someone else.

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