@Override
    public MetricsRecordBuilder addCounter(MetricsInfo metricsInfo, int i) {
      counters.put(canonicalizeMetricName(metricsInfo.name()), Long.valueOf(i));
      return this;
    }
A helper class that will allow tests to get into hadoop2's metrics2 values.
hbase-hadoop-compat/src/test/java/org/apache/hadoop/hbase/test/MetricsAssertHelperImpl.java