LakshSingla commented on code in PR #16682:
URL: https://github.com/apache/druid/pull/16682#discussion_r1668572609
##########
extensions-core/datasketches/src/main/java/org/apache/druid/query/aggregation/datasketches/hll/HllSketchMergeAggregatorFactory.java:
##########
@@ -142,6 +151,22 @@ public VectorAggregator
factorizeVector(VectorColumnSelectorFactory selectorFact
);
}
+ private void validateInputs(@Nullable ColumnCapabilities capabilities)
+ {
+ if (capabilities != null) {
+ final ColumnType type = capabilities.toColumnType();
+ if (!ColumnType.UNKNOWN_COMPLEX.equals(type) && !TYPE.equals(type) &&
+ !(ValueType.COMPLEX.equals(type.getType()) &&
+ (Objects.equals(type.getComplexTypeName(), "HLLSketch") ||
+ Objects.equals(type.getComplexTypeName(), "HLLSketchBuild")))) {
+ throw new UOE("Using aggregation type %s is not supported for %s
column. "
+ + "Use a different aggregator type and run the query
again.",
+ getIntermediateType().getComplexTypeName(),
+ type);
Review Comment:
Its like:
```java
throw new UOE(a,
b);
```
Correct would be something like:
```suggestion
throw new UOE(
"Using aggregation type %s is not supported for %s column. "
+ "Use a different aggregator type and run the query
again.",
getIntermediateType().getComplexTypeName(),
type
);
```
The code style doesn't catch such errors afair.
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