java.lang.ClassCastException: java.lang.Long cannot be cast to scala.Tuple2

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  • java.lang.ClassCastException: java.lang.Long cannot be cast to scala.Tuple2 at org.apache.spark.graphx.impl.RoutingTableMessageSerializer$$anon$1$$anon$2.writeObject(Serializers.scala:39) at org.apache.spark.storage.DiskBlockObjectWriter.write(BlockObjectWriter.scala:195) at org.apache.spark.util.collection.ExternalSorter.spillToMergeableFile(ExternalSorter.scala:329)
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