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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-325) Column bloomfilter not exploited
Date Thu, 30 Jul 2009 16:41:15 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737169#action_12737169
] 

Jonathan Ellis commented on CASSANDRA-325:
------------------------------------------

Oh, right, I forgot about the sparse aspect.

I'm having trouble coming up with a workload that involves frequently asking for columns that
don't exist, though.

> Column bloomfilter not exploited
> --------------------------------
>
>                 Key: CASSANDRA-325
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-325
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jun Rao
>
> There is a bloomfilter created for all columns per row in SSTables. The bloomfilter is
deserialized during read, but is not checked.

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