akalash commented on a change in pull request #16797:
URL: https://github.com/apache/flink/pull/16797#discussion_r689423396
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File path:
flink-streaming-java/src/test/java/org/apache/flink/streaming/runtime/operators/StreamTaskTimerTest.java
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@@ -70,11 +70,22 @@ public void teardown() throws Exception {
}
@Test
- public void testOpenCloseAndTimestamps() {
- // first one spawns thread
+ public void testOpenCloseAndTimestamps() throws InterruptedException {
+ // Wait for the start of threads: throughput calculation.
+ int initiallyExpectedThreads = 1;
+ waitUntilTaskTriggerThreadsOnStart(initiallyExpectedThreads);
+
+ // Spawn one more thread.
timeService.registerTimer(System.currentTimeMillis(), timestamp -> {});
- assertEquals(2, StreamTask.TRIGGER_THREAD_GROUP.activeCount());
+ assertEquals(initiallyExpectedThreads + 1,
StreamTask.TRIGGER_THREAD_GROUP.activeCount());
+ }
+
+ private void waitUntilTaskTriggerThreadsOnStart(int expectedThreads)
+ throws InterruptedException {
+ while (StreamTask.TRIGGER_THREAD_GROUP.activeCount() !=
expectedThreads) {
+ Thread.sleep(1);
+ }
Review comment:
I added the timeout for test
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