Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/12236#discussion_r59086797
--- Diff:
streaming/src/test/scala/org/apache/spark/streaming/scheduler/ReceiverTrackerSuite.scala
---
@@ -102,6 +102,31 @@ class ReceiverTrackerSuite extends TestSuiteBase {
}
}
}
+
+ test("get allocated executors") {
+ // Test get allocated executors when 1 receiver is registered
+ withStreamingContext(new StreamingContext(conf, Milliseconds(100))) {
ssc =>
+ val input = ssc.receiverStream(new TestReceiver)
+ val output = new TestOutputStream(input)
+ output.register()
+ ssc.start()
+ eventually(timeout(10 seconds), interval(10 millis)) {
+ assert(ssc.scheduler.receiverTracker.allocatedExecutors().size ===
1)
+ }
+ }
+
+ // Test get allocated executors when there's no receiver registered
+ withStreamingContext(new StreamingContext(conf, Milliseconds(100))) {
ssc =>
+ val rdd = ssc.sc.parallelize(1 to 10)
+ val input = new ConstantInputDStream(ssc, rdd)
+ val output = new TestOutputStream(input)
+ output.register()
+ ssc.start()
+ eventually(timeout(10 seconds), interval(10 millis)) {
+ assert(ssc.scheduler.receiverTracker.allocatedExecutors() ===
Map.empty)
--- End diff --
This cannot test the issue. Right? Before any receiver starts,
`ssc.scheduler.receiverTracker.allocatedExecutors` will return `Map.empty` as
well.
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