[GitHub] [spark] dgd-contributor commented on a change in pull request #33536: [SPARK-36101][CORE] Grouping exception in core/api

[GitBox <gi...@apache.org>]

dgd-contributor commented on a change in pull request #33536:
URL: https://github.com/apache/spark/pull/33536#discussion_r693459702



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File path: core/src/main/scala/org/apache/spark/api/java/JavaUtils.scala
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@@ -89,7 +91,7 @@ private[spark] object JavaUtils {
                   mm.remove(k)
                   prev = None
                 case _ =>
-                  throw new UnsupportedOperationException("remove")

Review comment:
       How can we identify which error is user-facing error or not? Is there any rule we can apply?




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