Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/20598#discussion_r168064805 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/StreamingRelation.scala --- @@ -62,7 +64,7 @@ case class StreamingRelation(dataSource: DataSource, sourceName: String, output: case class StreamingExecutionRelation( --- End diff -- not very familiar with the streaming side, but IIRC, some of these plans are temporary and will be replaced before entering analyzer, and these plans don't need to extend MultiInstanceRelation.
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