Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/20225#discussion_r161045063
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/streaming/continuous/ContinuousSuite.scala
---
@@ -219,6 +199,37 @@ class ContinuousSuite extends ContinuousSuiteBase {
StopStream)
}
+ test("kill task") {
+ val df = spark.readStream
+ .format("rate")
+ .option("numPartitions", "5")
+ .option("rowsPerSecond", "5")
+ .load()
+ .select('value)
+
+ // Get an arbitrary task from this query to kill. It doesn't matter
which one.
+ var taskId: Long = -1
+ val listener = new SparkListener() {
+ override def onTaskStart(start: SparkListenerTaskStart): Unit = {
+ taskId = start.taskInfo.taskId
+ }
+ }
+ spark.sparkContext.addSparkListener(listener)
+
+ testStream(df, useV2Sink = true)(
+ StartStream(Trigger.Continuous(100)),
+ Execute(waitForRateSourceTriggers(_, 2)),
+ Execute { _ =>
+ eventually(timeout(streamingTimeout)) { assert(taskId != -1) }
+ spark.sparkContext.killTaskAttempt(taskId)
+ },
+ Execute(waitForRateSourceTriggers(_, 4)),
--- End diff --
can you explain the logic behind this test? what does this test do?
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