smallzhongfeng commented on code in PR #39962:
URL: https://github.com/apache/spark/pull/39962#discussion_r1111057261


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core/src/main/scala/org/apache/spark/scheduler/ExecutorDecommissionInfo.scala:
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@@ -17,6 +17,9 @@
 
 package org.apache.spark.scheduler
 
+private[spark]
+sealed abstract class DecommissionInfo

Review Comment:
   It should not be necessary. After all, the case class here only needs to 
inherit this class `DecommissionInfo`. If the case class need multiple 
inheritance, it is more appropriate to use the trait here.



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