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From "Cristian Opris (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-4989) Expose new SliceQueryFilter features through Thrift interface
Date Fri, 23 Nov 2012 14:32:58 GMT
Cristian Opris created CASSANDRA-4989:
-----------------------------------------

             Summary: Expose new SliceQueryFilter features through Thrift interface
                 Key: CASSANDRA-4989
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4989
             Project: Cassandra
          Issue Type: Improvement
          Components: API
    Affects Versions: 1.2.0, 1.2.1, 1.3
            Reporter: Cristian Opris


SliceQueryFilter has some very useful new features like ability to specify a composite column
prefix to group by and specify a limit of groups to return.

This is very useful if for example I have a wide row with columns prefixed by timestamp and
I want to retrieve the latest columns, but I don't know the column names. Say I have a row
{{row -> (t1, c1), (t1, c2)... (t1, cn) ... (t0,c1) ... etc}}

Query slice range (t1,) group by prefix (1) limit (1)

As a more general question, is the Thrift interface going to be kept up-to-date with the feature
changes or will it be left behind (a mistake IMO) ?



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