@Override
    public String toString() {
      if (prevCell == null) return "no data available for statistics";

      // Dump the metrics to the output stream
      simpleReporter.report();

      return metricsOutput.toString() + "Key of biggest row: " + Bytes.toStringBinary(biggestRow);
    }
Holds a Histogram and supporting min/max and range buckets for analyzing distribution of key
bytes, value bytes, row bytes, and row columns. Supports adding values, getting the histogram,
and getting counts per range.
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFilePrettyPrinter.java