Dynamic pruning with DocValueSkipper (#14672)

Author: gf2121

lucene/CHANGES.txt

@@ -31,6 +31,8 @@ Improvements
 * GITHUB#14602: Refactor the expressions compiler to use official ClassData BSM with indexed lookup
   (Uwe Schindler)
 
+* GITHUB#14672: Numeric sort queries can take advantage of DocValuesSkipper to dynamic prune. (Guo Feng)
+
 * GITHUB#14443: Support adaptive refresh in Searcher Managers (Vigya Sharma)
 
 * GITHUB#14737: Clean up redundant code and comments in query node classes. (Stefan Vodita)

lucene/core/src/java/org/apache/lucene/search/DocValuesRangeIterator.java

@@ -67,7 +67,7 @@ abstract static class Approximation extends AbstractDocIdSetIterator {
 
     // Track a decision for all doc IDs between the current doc ID and upTo inclusive.
     Match match = Match.MAYBE;
-    int upTo = -1;
+    int upTo;
 
     Approximation(
         DocIdSetIterator innerApproximation,
@@ -78,6 +78,7 @@ abstract static class Approximation extends AbstractDocIdSetIterator {
       this.skipper = skipper;
       this.lowerValue = lowerValue;
       this.upperValue = upperValue;
+      this.upTo = skipper.maxDocID(0);
     }
 
     @Override