final TestFloatColumnSelector selector = new TestFloatColumnSelector(VALUES);
ApproximateHistogramAggregator agg = new ApproximateHistogramAggregator("price", selector, 10, Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY);
for (int i = 0; i < VALUES.length; i++) {
agg.aggregate();
selector.increment();
}
Map<String, Object> metricValues = new HashMap<String, Object>();
metricValues.put(agg.getName(), agg.get());