gsmiller commented on code in PR #999:
URL: https://github.com/apache/lucene/pull/999#discussion_r911970890


##########
lucene/core/src/java/org/apache/lucene/search/WANDScorer.java:
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@@ -368,22 +406,24 @@ private void advanceHead(int target) throws IOException {
     }
   }
 
-  private void advanceTail(DisiWrapper disi) throws IOException {
+  private DisiWrapper advanceTail(DisiWrapper disi) throws IOException {

Review Comment:
   Maybe a short javadoc comment here and on the other `advanceTail` method 
that it returns the advanced disi only if it gets added to the leads? I guess 
it's pretty obvious when looking at it, but never hurts :)



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