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https://issues.apache.org/jira/browse/CASSANDRA-1157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-1157:
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Attachment: 1157-v2.txt
I did correct TV to allow unindexed expressions as long as there was a single
indexed one. The problem was a bug in the system test -- it wasn't actually
rebuilding the RowPredicate, so each call was using the original
single-expressing clause. v2 attached.
(Your TV change, btw, would allow queries with no indexed expressions, as long
as there was more than one undexed one.)
> 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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