String generateStatus(final long sr, final long i, final long lr) {
      return "row [start=" + sr + ", current=" + i + ", last=" + lr + "], latency ["
        + getShortLatencyReport() + "]"
        + (!isRandomValueSize() ? "" : ", value size [" + getShortValueSizeReport() + "]");
    }
Note that all subclasses of this class must provide a public constructor that has the exact
same list of arguments.
hbase-diagnostics/src/main/java/org/apache/hadoop/hbase/PerformanceEvaluation.java