code: protected VoltTable[] createAndExecuteSysProcPlan(int fragmentId, int aggFragmentId, ParameterSet params) {
          return executeSysProcPlanFragments(
                  SynthesizedPlanFragment.createFragmentAndAggregator(fragmentId, aggFragmentId, params),
                  aggFragmentId);
      }
docs: Create a two {@link SynthesizedPlanFragment} the first one is a multi partition fragment and the second is an
  aggregator fragment. Then execute the fragments and return the resulting {@link VoltTable[]} from the aggregator
  fragment.
  
  @param fragmentId    Of the multi partition fragment
  @param aggFragmentId Fragment ID of the aggeregator fragment
  @param params        {@link ParameterSet} which is to be passed to the multi partition fragment
  @return Resulting {@link VoltTable[]} from executing the fragments