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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1157) add support for multiple indexexpressions
Date Tue, 27 Jul 2010 13:41:23 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12892769#action_12892769
] 

Hudson commented on CASSANDRA-1157:
-----------------------------------

Integrated in Cassandra #501 (See [http://hudson.zones.apache.org/hudson/job/Cassandra/501/])
    

> add support for multiple indexexpressions
> -----------------------------------------
>
>                 Key: CASSANDRA-1157
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1157
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>             Fix For: 0.7 beta 1
>
>         Attachments: 1157-v2.txt, 1157.txt, 1157_thrift_validation_fix_w_tests.txt
>
>
> we should:
>  - use the statistics from CASSANDRA-1155 to figure out which index has the highest selectivity,
and start with that
>  - if other indexes have high selectivity (average number of columns in an index row
is less than 1% of total in that CF), we should do a merge join
>  - otherwise, just loop the results from the first and reject un-satisfied expressions

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