yashmayya commented on code in PR #14071:
URL: https://github.com/apache/pinot/pull/14071#discussion_r1778023036
##########
pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/CountAggregationFunction.java:
##########
@@ -145,12 +145,23 @@ public void aggregateGroupBySV(int length, int[]
groupKeyArray, GroupByResultHol
@Override
public void aggregateGroupByMV(int length, int[][] groupKeysArray,
GroupByResultHolder groupByResultHolder,
Map<ExpressionContext, BlockValSet> blockValSetMap) {
- if (blockValSetMap.isEmpty() ||
!blockValSetMap.containsKey(STAR_TREE_COUNT_STAR_EXPRESSION)) {
+ if (blockValSetMap.isEmpty()) {
for (int i = 0; i < length; i++) {
for (int groupKey : groupKeysArray[i]) {
groupByResultHolder.setValueForKey(groupKey,
groupByResultHolder.getDoubleResult(groupKey) + 1);
}
}
+ } else if (_nullHandlingEnabled) {
Review Comment:
Yep, performance was not the concern here, but the fact that we need to
handle non-empty vs empty blocks differently (see my other comment
[here](https://github.com/apache/pinot/pull/14071#discussion_r1778020911)).
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