in src/main/java/org/apache/datasketches/pig/quantiles/DataToItemsSketch.java [182:197]
public void accumulate(final Tuple inputTuple) throws IOException {
if ((inputTuple == null) || (inputTuple.size() == 0)) { return; }
final DataBag bag = (DataBag) inputTuple.get(0);
if (bag == null) { return; }
if (this.accumUnion_ == null) {
this.accumUnion_ = this.k_ > 0
? ItemsUnion.getInstance(this.k_, this.comparator_)
: ItemsUnion.getInstance(this.comparator_);
}
for (final Tuple innerTuple: bag) {
final Object value = innerTuple.get(0);
if (value != null) {
this.accumUnion_.update(extractValue(value));
}
}
}