Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/19327#discussion_r142335872
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamingJoinSuite.scala
---
@@ -470,3 +475,283 @@ class StreamingJoinSuite extends StreamTest with
StateStoreMetricsTest with Befo
}
}
}
+
+class StreamingOuterJoinSuite extends StreamTest with
StateStoreMetricsTest with BeforeAndAfter {
+
+ import testImplicits._
+ import org.apache.spark.sql.functions._
+
+ before {
+ SparkSession.setActiveSession(spark) // set this before force
initializing 'joinExec'
+ spark.streams.stateStoreCoordinator // initialize the lazy coordinator
+ }
+
+ after {
+ StateStore.stop()
+ }
+
+ private def setupStream(prefix: String, multiplier: Int):
(MemoryStream[Int], DataFrame) = {
+ val input = MemoryStream[Int]
+
+ val df = input.toDF
+ .select(
+ 'value as "key",
+ 'value.cast("timestamp") as s"${prefix}Time",
+ ('value * multiplier) as s"${prefix}Value")
+ .withWatermark(s"${prefix}Time", "10 seconds")
+
+ return (input, df)
+ }
+
+ private def setupWindowedJoin(joinType: String) = {
+ val (input1, df1) = setupStream("left", 2)
+ val (input2, df2) = setupStream("right", 3)
+
+ val windowed1 = df1.select('key, window('leftTime, "10 second"),
'leftValue)
+
--- End diff --
some of these empty lines can be removed
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