AHeise commented on a change in pull request #14608:
URL: https://github.com/apache/flink/pull/14608#discussion_r555342871
##########
File path:
flink-streaming-java/src/test/java/org/apache/flink/streaming/runtime/operators/MailboxOperatorTest.java
##########
@@ -67,35 +69,35 @@ public void testAvoidTaskStarvation() throws Exception {
.chain(
new OperatorID(),
new
ReplicatingMailOperatorFactory(maxProcessingElements),
- IntSerializer.INSTANCE)
+ LongSerializer.INSTANCE)
.finish();
testHarness.invoke();
testHarness.waitForTaskRunning();
for (int i = 0; i < maxProcessingElements; i++) {
- testHarness.processElement(new StreamRecord<>(0));
+ testHarness.processElement(new StreamRecord<>(0L));
+ Thread.sleep(1);
}
testHarness.endInput();
testHarness.waitForTaskCompletion();
+ List<Long> numMailsProcessed =
+ testHarness.getOutput().stream()
+ .map(element -> ((StreamRecord<Long>)
element).getValue())
+ .collect(Collectors.toList());
// with each input two mails should be processed, one of each operator
in the chain
- List<Integer> expected = new ArrayList<>();
+ // verify that at least one mail was processed between inputs
+ List<Matcher> minExpectedMatchers = new ArrayList<>();
for (int i = 0; i < maxProcessingElements; i++) {
- expected.add(i * 2);
+ minExpectedMatchers.add(Matchers.greaterThanOrEqualTo(i * 2L));
}
- List<Integer> numMailsProcessed =
- testHarness.getOutput().stream()
- .map(element -> ((StreamRecord<Integer>)
element).getValue())
- .collect(Collectors.toList());
- assertThat(numMailsProcessed, is(expected));
+ assertThat(numMailsProcessed, hasItems(minExpectedMatchers.toArray(new
Matcher[0])));
Review comment:
The result actually captured the number of mails processed, which is [0;
2; 4] in most cases.
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