zacharymorn commented on a change in pull request #2205:
URL: https://github.com/apache/lucene-solr/pull/2205#discussion_r559224756



##########
File path: lucene/core/src/java/org/apache/lucene/search/WANDScorer.java
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@@ -319,7 +356,10 @@ private void pushBackLeads(int target) throws IOException {
       }
     }
     lead = null;
-    leadMaxScore = 0;
+
+    if (needsScore) {
+      leadMaxScore = 0;
+    }

Review comment:
       In the latest commit, I've done some refactoring and removed a few newly 
added branches that can be no-op for non-scoring mode, but not by a lot. 
Currently there are about 5 conditional branches left for handling non-scoring 
cases (checking `scoreMode  == ScoreMode.TOP_SCORES`), 1 is used in 
constructor, 2 used in assertions, and the last 2 were used in `advance` and 
`doNextCompetitiveCandidate`, so I felt that might be the minimal number of 
branches we could have now without major refactoring changes? What do you think?




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