jpountz commented on code in PR #14312:
URL: https://github.com/apache/lucene/pull/14312#discussion_r1986310180


##########
lucene/core/src/java/org/apache/lucene/search/DenseConjunctionBulkScorer.java:
##########
@@ -128,6 +128,16 @@ private void scoreWindowUsingBitSet(
     assert windowMatches.scanIsEmpty();
     assert clauseWindowMatches.scanIsEmpty();
 
+    windowIterators.clear();
+    for (DocIdSetIterator iterator : iterators) {
+      // Skip iterators that fully match the window
+      if (iterator.docID() > windowBase || iterator.peekNextNonMatchingDocID() 
< windowMax) {
+        windowIterators.add(iterator);
+      }
+    }
+    // Note: iterators may be empty!
+    iterators = windowIterators;

Review Comment:
   Ahhh right, thanks for catching. I did a large refactoring but I made sure 
to fix this, and added tests to DenseConjunctionBulkScorer that should catch 
such problems in the future.



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