Hi David, Looking at the last comments on LUCENE-4547[1], I think it has not been decided yet whether there will be a type for multi-valued doc values or applications will need to build it on top of binary doc values. If all your documents have a fixed number of values, maybe an option could be to use several doc values sources?
[1] https://issues.apache.org/jira/browse/LUCENE-4547 -- Adrien
