Github user uncleGen commented on a diff in the pull request:
https://github.com/apache/spark/pull/17913#discussion_r115415483
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/StreamingRelation.scala
---
@@ -64,8 +64,20 @@ case class StreamingRelationExec(sourceName: String,
output: Seq[Attribute]) ext
}
}
-object StreamingExecutionRelation {
- def apply(source: Source): StreamingExecutionRelation = {
- StreamingExecutionRelation(source, source.schema.toAttributes)
+case class StreamingRelationWrapper(child: LogicalPlan) extends UnaryNode {
+ override def isStreaming: Boolean = true
+ override def output: Seq[Attribute] = child.output
+}
+
--- End diff --
Add a new `StreamingRelationWrapper` relation to wrap the internal relation
in each trigger. It keeps the `isStreaming` property.
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