Jackie-Jiang commented on code in PR #9086:
URL: https://github.com/apache/pinot/pull/9086#discussion_r935139942
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pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/CountAggregationFunction.java:
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@@ -89,7 +122,33 @@ public void aggregate(int length, AggregationResultHolder
aggregationResultHolde
@Override
public void aggregateGroupBySV(int length, int[] groupKeyArray,
GroupByResultHolder groupByResultHolder,
Map<ExpressionContext, BlockValSet> blockValSetMap) {
- if (blockValSetMap.isEmpty()) {
+ if (blockValSetMap.isEmpty() ||
!blockValSetMap.containsKey(STAR_TREE_COUNT_STAR_EXPRESSION)) {
Review Comment:
When both null handling and star-tree are not enabled, will it pass in
non-empty `blockValSetMap`? Ideally it should pass in empty `blockValSetMap`,
or it could add extra overhead for existing use cases
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