xiangfu0 commented on code in PR #17284:
URL: https://github.com/apache/pinot/pull/17284#discussion_r2580763551
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pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/array/SumArrayDoubleAggregationFunction.java:
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@@ -138,7 +138,7 @@ public DoubleArrayList merge(DoubleArrayList
intermediateResult1, DoubleArrayLis
@Override
public DataSchema.ColumnDataType getIntermediateResultColumnType() {
- return DataSchema.ColumnDataType.DOUBLE_ARRAY;
+ return DataSchema.ColumnDataType.OBJECT;
Review Comment:
aggregation intermediate serde only handle int/long/double/string see:
`AggregationFunctionUtils#getIntermediateResult(...)`
and
`AggregationResultsBlock#setIntermediateResult(...)`
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