showuon commented on code in PR #15305:
URL: https://github.com/apache/kafka/pull/15305#discussion_r1577219150
##########
connect/runtime/src/test/java/org/apache/kafka/connect/runtime/distributed/WorkerCoordinatorTest.java:
##########
@@ -533,6 +536,57 @@ public void testSkippingAssignmentFails() {
verify(configStorage).snapshot();
}
+ @Test
+ public void testPollTimeoutExpiry() throws InterruptedException {
+ // We will create a new WorkerCoordinator object with a rebalance
timeout smaller
+ // than session timeout. This might not happen in the real world but
it makes testing
+ // easier and the test not flaky.
+ int smallRebalanceTimeout = 20;
+ this.rebalanceConfig = new GroupRebalanceConfig(sessionTimeoutMs,
+ smallRebalanceTimeout,
+ heartbeatIntervalMs,
+ groupId,
+ Optional.empty(),
+ retryBackoffMs,
+ retryBackoffMaxMs,
+ true);
+ this.coordinator = new WorkerCoordinator(rebalanceConfig,
+ logContext,
+ consumerClient,
+ new Metrics(time),
+ "consumer" + groupId,
+ time,
+ LEADER_URL,
+ configStorage,
+ rebalanceListener,
+ compatibility,
+ 0);
+
+ when(configStorage.snapshot()).thenReturn(configState1);
+
+
client.prepareResponse(FindCoordinatorResponse.prepareResponse(Errors.NONE,
groupId, node));
+ coordinator.ensureCoordinatorReady(time.timer(Long.MAX_VALUE));
+
+ client.prepareResponse(joinGroupFollowerResponse(1, "member",
"leader", Errors.NONE));
+
client.prepareResponse(syncGroupResponse(ConnectProtocol.Assignment.NO_ERROR,
"leader", configState1.offset(), Collections.emptyList(),
+ Collections.singletonList(taskId1x0), Errors.NONE));
+
+ try (LogCaptureAppender logCaptureAppender =
LogCaptureAppender.createAndRegister(WorkerCoordinator.class)) {
+ coordinator.ensureActiveGroup();
+ coordinator.poll(0, () -> null);
+
+ // The heartbeat thread is running and keeps sending heartbeat
requests.
+ TestUtils.waitForCondition(() -> {
+ // Rebalance timeout elapses while poll is never invoked
causing a poll timeout expiry
+ coordinator.sendHeartbeatRequest();
+ client.prepareResponse(new HeartbeatResponse(new
HeartbeatResponseData()));
+ time.sleep(1);
Review Comment:
If you set `RebalanceTimeout < sessionTimeout`, why do we need the
heartBeatRequest? You should be able to sleep (RebalanceTimeout + 1) directly
to get the log. Ex:
```
try (LogCaptureAppender logCaptureAppender =
LogCaptureAppender.createAndRegister(WorkerCoordinator.class)) {
coordinator.ensureActiveGroup();
coordinator.poll(0, () -> null);
time.sleep(smallRebalanceTimeout + 1);
// The heartbeat thread is running and keeps sending heartbeat
requests.
TestUtils.waitForCondition(() ->
logCaptureAppender.getEvents().stream().anyMatch(e ->
e.getLevel().equals("WARN")) &&
logCaptureAppender.getEvents().stream().anyMatch(e ->
e.getMessage().startsWith("worker poll timeout has expired"), ...)
```
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