[GitHub] [spark] maropu commented on a change in pull request #27368: [SPARK-30651][SQL] Add detailed information for Aggregate operators in EXPLAIN FORMATTED

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maropu commented on a change in pull request #27368: [SPARK-30651][SQL] Add detailed information for Aggregate operators in EXPLAIN FORMATTED
URL: https://github.com/apache/spark/pull/27368#discussion_r375061952
 
 

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 File path: sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/AggregateExec.scala
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 @@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.execution.aggregate
+
+import org.apache.spark.sql.catalyst.expressions.NamedExpression
+import org.apache.spark.sql.catalyst.expressions.aggregate.AggregateExpression
+import org.apache.spark.sql.execution.{ExplainUtils, UnaryExecNode}
+
+/**
+ * Holds common logic for aggregate operators
+ */
+abstract class AggregateExec(
+    groupingExpressions: Seq[NamedExpression],
+    aggregateExpressions: Seq[AggregateExpression],
+    resultExpressions: Seq[NamedExpression])
+  extends UnaryExecNode {
 
 Review comment:
   Can you follow the other style, e.g., HashJoin?
   https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashJoin.scala#L29-L38

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