cryptoe commented on code in PR #15516:
URL: https://github.com/apache/druid/pull/15516#discussion_r1440101620
##########
extensions-core/datasketches/src/main/java/org/apache/druid/query/aggregation/datasketches/hll/HllSketchAggregatorFactory.java:
##########
@@ -62,6 +63,31 @@ public abstract class HllSketchAggregatorFactory extends
AggregatorFactory
private final boolean shouldFinalize;
private final boolean round;
+ HllSketchAggregatorFactory(
+ final String name,
+ final String fieldName,
+ @Nullable final Integer lgK,
+ @Nullable final String tgtHllType,
+ @Nullable final StringEncoding stringEncoding,
+ final Boolean shouldFinalize,
+ final boolean round,
+ final int maxLgK
+ )
+ {
+ this(name, fieldName, lgK, tgtHllType, stringEncoding, shouldFinalize,
round);
+
+ if (this.lgK > maxLgK) {
+ throw DruidException.forPersona(DruidException.Persona.USER)
+ .ofCategory(DruidException.Category.INVALID_INPUT)
+ .build(
+ "LgK value [%s] for HLL sketch cannot be greater
than [%s]. Reduce the lgK value"
Review Comment:
Please mention the name as well.
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