ilamhs commented on code in PR #18841:
URL: https://github.com/apache/pinot/pull/18841#discussion_r3475938305
##########
pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/BaseDistinctCountSmartSketchAggregationFunction.java:
##########
@@ -508,16 +508,20 @@ public final Object
extractAggregationResult(AggregationResultHolder aggregation
}
@Override
- public final Set extractGroupByResult(GroupByResultHolder
groupByResultHolder, int groupKey) {
+ public final Object extractGroupByResult(GroupByResultHolder
groupByResultHolder, int groupKey) {
Object result = groupByResultHolder.getResult(groupKey);
if (result == null) {
return EMPTY_PLACEHOLDER;
}
- if (result instanceof DictIdsWrapper) {
- return convertToValueSet((DictIdsWrapper) result);
+ if (result instanceof DictIdsWrapper dictIdsWrapper) {
+ if (dictIdsWrapper._dictIdBitmap.cardinalityExceeds(getThreshold())) {
+ return convertToSketch(dictIdsWrapper);
+ } else {
+ return convertToValueSet(dictIdsWrapper);
+ }
Review Comment:
Ah got it, yes. Updated now.
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