add support for multiple indexexpressions
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Key: CASSANDRA-1157
URL: https://issues.apache.org/jira/browse/CASSANDRA-1157
Project: Cassandra
Issue Type: Sub-task
Reporter: Jonathan Ellis
Fix For: 0.7
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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