public boolean isInputPartial() {
    return inputType == InputType.PARTIAL;
  }
This attribute indicates the input and output type of the {@code Aggregator}.

<p>There are three types of input/output:

<ul>
  <li>Raw: raw data, as input only
  <li>Partial: intermediate aggregation result
  <li>Final: final aggregation result
</ul>
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/plan/parameter/AggregationStep.java