Using BatchScoreBulkScorer on CombinedFieldQuery (#14854)

Co-authored-by: gesong.samuel <[email protected]>

Author: HUSTERGS

lucene/CHANGES.txt

@@ -192,6 +192,8 @@ Optimizations
 
 * GITHUB#14772: Implement ConstantScoreScorer#nextDocsAndScores. (Ge Song)
 
+* GITHUB#14854: Using BatchScoreBulkScorer on CombinedFieldQuery. (Ge Song)
+
 Bug Fixes
 ---------------------
 * GITHUB#14654: ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw errors when

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

@@ -395,6 +395,11 @@ public Scorer get(long leadCost) throws IOException {
         public long cost() {
           return finalCost;
         }
+
+        @Override
+        public BulkScorer bulkScorer() throws IOException {
+          return new BatchScoreBulkScorer(get(Long.MAX_VALUE));
+        }
       };
     }