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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5626) Compactions simulator tool for proofing algorithms
Date Fri, 25 Jan 2013 01:49:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13562267#comment-13562267
] 

Sergey Shelukhin commented on HBASE-5626:
-----------------------------------------

IMHO it may make sense to have it in java... if we could have some sort of pluggability in
policy and compactor, which would cause them to not read or write the files but just report
what they "read" and "wrote", we could use normal compaction code without having to keep the
script in sync.
                
> 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
>         Attachments: cf_compact.py
>
>
> 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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