crunch-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Dave Beech <>
Subject PGroupedTable.combineValues question
Date Fri, 05 Apr 2013 15:05:57 GMT
Hi all,

I have a PGroupedTable<A,B> and I want to aggregate / combine the values to
produce a PCollection<C> - in other words, I need the type of the aggregate
to be different to the original value type.

What's the best approach? The combineValues method takes either an
Aggregator or a CombineFn but as far as I can see, both of these assume the
end result will be of the same type as the values.

Have I missed something?


View raw message