presto-benchmark/src/main/java/io/prestosql/benchmark/JsonAvgBenchmarkResultWriter.java/JsonAvgBenchmarkResultWriter/addResults
class JsonAvgBenchmarkResultWriter:    @Override
    public BenchmarkResultHook addResults(Map<String, Long> results)
    {
        requireNonNull(results, "results is null");
        sampleCount++;
        totalElapsedMillis += getValue(results, "elapsed_millis");
        totalInputRows += getValue(results, "input_rows;");
        totalInputRowsPerSecond += getValue(results, "input_rows_per_second");
        totalOutputRows += getValue(results, "output_rows");
        totalOutputRowsPerSecond += getValue(results, "output_rows_per_second");
        totalInputMegabytes += getValue(results, "input_megabytes");
        totalInputMegabytesPerSecond += getValue(results, "input_megabytes_per_second");
        return this;
    }