public boolean equivalent(QuantileDigest other) {
rescaleToCommonLandmark(this, other);
return (totalNodeCount == other.totalNodeCount
&& nonZeroNodeCount == other.nonZeroNodeCount
&& min == other.min
&& max == other.max
&& weightedCount == other.weightedCount
&& Objects.equal(root, other.root));
}
public void merge(QuantileDigest other) {
rescaleToCommonLandmark(this, other);
// 2. merge other into this (don't modify other)
root = merge(root, other.root);
max = Math.max(max, other.max);
min = Math.min(min, other.min);
// 3. compress to remove unnecessary nodes
compress();
}