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From "Nicolas Spiegelberg (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5626) Compactions simulator tool for proofing algorithms
Date Mon, 26 Mar 2012 21:12:26 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238838#comment-13238838
] 

Nicolas Spiegelberg commented on HBASE-5626:
--------------------------------------------

How is this different from the compaction simulation python script?  The unit of measurement
should be a flush, since we flush after a certain memstore memory size, regardless of flow
rate or KV length.
                
> Compactions simulator tool for proofing algorithms
> --------------------------------------------------
>
>                 Key: HBASE-5626
>                 URL: https://issues.apache.org/jira/browse/HBASE-5626
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>            Priority: Minor
>              Labels: noob
>
> A tool to run compaction simulations would be a nice to have.   We could use it to see
how well an algo ran under different circumstances loaded w/ different value types with different
rates of flushes and splits, etc. HBASE-2462 had one (see in patch).  Or we could try doing
it using something like this: http://en.wikipedia.org/wiki/Discrete_event_simulation

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