mikemccand commented on a change in pull request #191:
URL: https://github.com/apache/lucene/pull/191#discussion_r659242352



##########
File path: 
lucene/facet/src/java/org/apache/lucene/facet/LongValueFacetCounts.java
##########
@@ -162,8 +164,14 @@ private void count(String field, List<MatchingDocs> 
matchingDocs) throws IOExcep
           if (limit > 0) {
             totCount++;
           }
+          Set<Long> uniqueLongValues =
+              new HashSet<>(); // count each repeated long value in a field as 
the same

Review comment:
       That's a great point @rmuir!  Then we don't even need the hash set/map!




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