ankitsultana commented on code in PR #16583:
URL: https://github.com/apache/pinot/pull/16583#discussion_r2357262410


##########
pinot-core/src/main/java/org/apache/pinot/core/operator/docidsets/AndDocIdSet.java:
##########
@@ -165,6 +166,9 @@ public BlockDocIdIterator iterator() {
         }
       }
       for (ScanBasedDocIdIterator scanBasedDocIdIterator : 
scanBasedDocIdIterators) {
+        if (!docIds.cardinalityExceeds(0)) {

Review Comment:
   nit: I think this has only marginal benefit and introduces a new control 
flow. we can skip this imo



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