public class AggregableMultiOp<T> extends Object implements IAggregableReduceOp<T,List<Writable>>
IAggregableReduceOp
on one single field, each returning a Writable
and transforms it into an operation on that single column, that returns a Writable
list.
It is used to execute many reduction operations in parallel on the same column, datavec#238
Created by huitseeker on 5/8/17.Constructor and Description |
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AggregableMultiOp() |
Modifier and Type | Method and Description |
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void |
accept(T t) |
<U extends IAggregableReduceOp<T,List<Writable>>> |
combine(U accu) |
List<Writable> |
get() |
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