kmozaid commented on code in PR #16836:
URL: https://github.com/apache/pinot/pull/16836#discussion_r2430948749
##########
pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/CountMVAggregationFunction.java:
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@@ -53,6 +53,17 @@ public List<ExpressionContext> getInputExpressions() {
public void aggregate(int length, AggregationResultHolder
aggregationResultHolder,
Map<ExpressionContext, BlockValSet> blockValSetMap) {
BlockValSet blockValSet = blockValSetMap.get(_expression);
+
+ if (blockValSet.isSingleValue()) {
Review Comment:
yes, now covered under integration test.
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