cloud-fan commented on a change in pull request #24149: [SPARK-27207][SQL] : 
Ensure aggregate buffers are initialized again for So…
URL: https://github.com/apache/spark/pull/24149#discussion_r281468191
 
 

 ##########
 File path: 
sql/core/src/test/scala/org/apache/spark/sql/TypedImperativeAggregateSuite.scala
 ##########
 @@ -299,5 +319,87 @@ object TypedImperativeAggregateSuite {
     }
   }
 
+  /**
+   * Calculate the max value with object aggregation buffer. This stores class 
MaxValue
+   * in aggregation buffer.
+   */
+  private case class TypedMax2(
+    child: Expression,
 
 Review comment:
   4 space indentation.

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