srowen commented on a change in pull request #33852:
URL: https://github.com/apache/spark/pull/33852#discussion_r701177245
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File path: core/src/main/scala/org/apache/spark/api/r/RBackendHandler.scala
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@@ -165,7 +165,7 @@ private[r] class RBackendHandler(server: RBackend)
// Write status bit
writeInt(dos, 0)
- writeObject(dos, ret.asInstanceOf[AnyRef], server.jvmObjectTracker)
Review comment:
You are running dev/change-scala-version.sh 2.13 first right?
I think this change is probably fine, but yeah the problem would be in Scala
version differences
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