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From "Matt Corgan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9940) PerformanceEvaluation should have a test with many table options on (Bloom, compression, FAST_DIFF, etc.)
Date Mon, 11 Nov 2013 03:17:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13818672#comment-13818672
] 

Matt Corgan commented on HBASE-9940:
------------------------------------

blockSize could be valuable.

If you leave blockSize set to the default 64KB, then encoded blocks with long keys and small
values could really be, say, 32KB in the block cache.  If you then double the blockSize setting
to 128KB in order to get the encoded size to 64KB, PerformanceEvaluation will show slower
random seeks because of the sequential seeking within blocks.

> PerformanceEvaluation should have a test with many table options on (Bloom, compression,
FAST_DIFF, etc.)
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-9940
>                 URL: https://issues.apache.org/jira/browse/HBASE-9940
>             Project: HBase
>          Issue Type: Bug
>          Components: Performance
>    Affects Versions: 0.96.0, 0.94.13
>            Reporter: Jean-Marc Spaggiari
>            Priority: Minor
>




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