ImmutableList.<Symbol>of(),
Aggregation.Step.ITER,
Aggregation.Step.PARTIAL);
Aggregation countAggregationFinal = new Aggregation(
CountAggregation.COUNT_STAR_FUNCTION,
ImmutableList.<Symbol>of(new InputColumn(0, DataTypes.LONG)),
Aggregation.Step.PARTIAL,
Aggregation.Step.FINAL);
CollectNode collectNode = new CollectNode(
"count",