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From GitBox <...@apache.org>
Subject [GitHub] dianfu commented on a change in pull request #7201: [FLINK-7208] [table] Optimize Min/MaxWithRetractAggFunction with DataView
Date Wed, 05 Dec 2018 06:43:31 GMT
dianfu commented on a change in pull request #7201: [FLINK-7208] [table] Optimize Min/MaxWithRetractAggFunction
with DataView
URL: https://github.com/apache/flink/pull/7201#discussion_r238940699
 
 

 ##########
 File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/aggregate/AggregateUtil.scala
 ##########
 @@ -1437,36 +1437,30 @@ object AggregateUtil {
 
           case collect: SqlAggFunction if collect.getKind == SqlKind.COLLECT =>
             aggregates(index) = new CollectAggFunction(FlinkTypeFactory.toTypeInfo(relDataType))
-            accTypes(index) = aggregates(index).getAccumulatorType
 
           case udagg: AggSqlFunction =>
             aggregates(index) = udagg.getFunction
-            accTypes(index) = udagg.accType
 
           case unSupported: SqlAggFunction =>
             throw new TableException(s"Unsupported Function: '${unSupported.getName}'")
         }
       }
+      accTypes(index) = getAccumulatorTypeOfAggregateFunction(aggregates(index))
     }
 
     val accSpecs = new Array[Seq[DataViewSpec[_]]](aggregateCalls.size)
 
     // create accumulator type information for every aggregate function
     aggregates.zipWithIndex.foreach { case (agg, index) =>
 
 Review comment:
   Without this change, we need to add `accTypes(index) = aggregates(index).getAccumulatorType`
for every built-in agg which uses `DataView` in the future. I think this change makes the
logic more simple and clear.

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