Github user jose-torres commented on a diff in the pull request:
https://github.com/apache/spark/pull/21560#discussion_r197928934
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/continuous/ContinuousDataSourceRDD.scala
---
@@ -98,6 +98,10 @@ class ContinuousDataSourceRDD(
override def getPreferredLocations(split: Partition): Seq[String] = {
split.asInstanceOf[ContinuousDataSourceRDDPartition].inputPartition.preferredLocations()
}
+
+ override def clearDependencies(): Unit = {
+ throw new IllegalStateException("Continuous RDDs cannot be
checkpointed")
--- End diff --
I don't know, I'm unfamiliar with this method. @tdas
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