walterddr commented on code in PR #10845:
URL: https://github.com/apache/pinot/pull/10845#discussion_r1248121185
##########
pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/BaseBooleanAggregationFunction.java:
##########
@@ -233,7 +233,8 @@ public Integer merge(Integer intermediateResult1, Integer
intermediateResult2) {
@Override
public DataSchema.ColumnDataType getIntermediateResultColumnType() {
- return DataSchema.ColumnDataType.BOOLEAN;
+ // The intermediateResult type is integer. The final result is converted
to a boolean.
+ return DataSchema.ColumnDataType.INT;
Review Comment:
this could cause backward-compatibility issue when upgrading. let's make
sure this doesn't cause issues (where is this function being used in v1)
in v2 as long as the expected data type conforms with calcite we are good
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