How to use

MergeStage

in

cascading.flow.stream.element

protected Duct createMergeStage( Merge merge, IORole both )
 {
 return new MergeStage( flowProcess, merge );
 }

/**
 * synchronized, as by default, each source gets its turn, no concurrent threads. Except in local mode
 *
 * @param previous
 * @param ordinal
 * @param tupleEntry
 */
@Override
public synchronized void receive( Duct previous, int ordinal, TupleEntry tupleEntry )
 {
 super.receive( previous, ordinal, tupleEntry );
 }
}