ankit0811 commented on code in PR #14462:
URL: https://github.com/apache/druid/pull/14462#discussion_r1411612349
##########
processing/src/main/java/org/apache/druid/query/aggregation/first/DoubleFirstAggregatorFactory.java:
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@@ -142,12 +160,24 @@ public VectorAggregator factorizeVector(
VectorColumnSelectorFactory columnSelectorFactory
)
{
+ VectorValueSelector timeSelector =
columnSelectorFactory.makeValueSelector(timeColumn);
ColumnCapabilities capabilities =
columnSelectorFactory.getColumnCapabilities(fieldName);
+
if (Types.isNumeric(capabilities)) {
VectorValueSelector valueSelector =
columnSelectorFactory.makeValueSelector(fieldName);
- VectorValueSelector timeSelector =
columnSelectorFactory.makeValueSelector(
- timeColumn);
- return new DoubleFirstVectorAggregator(timeSelector, valueSelector);
+ VectorObjectSelector objectSelector =
ExpressionVectorSelectors.castValueSelectorToObject(
+ columnSelectorFactory.getReadableVectorInspector(),
+ fieldName,
+ valueSelector,
+ capabilities.toColumnType(),
+ ColumnType.DOUBLE
+ );
+ return new DoubleFirstVectorAggregator(timeSelector, objectSelector);
+ }
Review Comment:
This is the same code flow as StringFirstAggregatorFactory.
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