abhishekagarwal87 commented on a change in pull request #9638:
URL: https://github.com/apache/druid/pull/9638#discussion_r472780816
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File path:
processing/src/main/java/org/apache/druid/query/aggregation/AggregatorFactory.java
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@@ -211,22 +213,35 @@ public AggregatorFactory
getMergingFactory(AggregatorFactory other) throws Aggre
public abstract List<String> requiredFields();
/**
- * Get the type name of the intermediate type for this aggregator. This is
the same as the type returned by
+ * Get the "intermediate" {@link ValueType} for this aggregator. This is the
same as the type returned by
* {@link #deserialize} and the type accepted by {@link #combine}. However,
it is *not* necessarily the same type
* returned by {@link #finalizeComputation}.
+ */
+ public abstract ValueType getType();
Review comment:
thinking out loud. how about having a class such as
`AggregatorOutputType` which can contain `combine` and `finalize` types.
Aggregators just override one method which can be `AggregatorOutputType
getType()`
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