in src/main/java/org/apache/datasketches/pig/hll/UnionSketch.java [138:150]
public void accumulate(final Tuple inputTuple) throws IOException {
if (this.isFirstCall_) {
Logger.getLogger(getClass()).info("Accumulator was used");
this.isFirstCall_ = false;
}
if (inputTuple == null || inputTuple.size() == 0) { return; }
final DataBag bag = (DataBag) inputTuple.get(0);
if (bag == null) { return; }
if (this.accumUnion_ == null) {
this.accumUnion_ = new Union(this.lgK_);
}
updateUnion(bag, this.accumUnion_);
}