Jackie-Jiang commented on code in PR #9086:
URL: https://github.com/apache/pinot/pull/9086#discussion_r929370127
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pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/MaxAggregationFunction.java:
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@@ -28,13 +28,19 @@
import
org.apache.pinot.core.query.aggregation.groupby.DoubleGroupByResultHolder;
import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder;
import org.apache.pinot.segment.spi.AggregationFunctionType;
+import org.roaringbitmap.RoaringBitmap;
public class MaxAggregationFunction extends
BaseSingleInputAggregationFunction<Double, Double> {
private static final double DEFAULT_INITIAL_VALUE = Double.NEGATIVE_INFINITY;
+ private final boolean _nullHandlingEnabled;
- public MaxAggregationFunction(ExpressionContext expression) {
+ // stores id of the groupKey where the corresponding value is null.
+ private Integer _groupKeyForNullValue = null;
Review Comment:
Understood. We definitely need to track the null values in the aggregated
column, but do we need to track the `_groupKeyForNullValue` in the aggregation
function as well? I think we already track it in the group-by executor, which
should be enough
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