FrankYang0529 commented on code in PR #17165:
URL: https://github.com/apache/kafka/pull/17165#discussion_r1762181434
##########
clients/src/test/java/org/apache/kafka/clients/consumer/KafkaConsumerTest.java:
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@@ -3443,6 +3443,33 @@ public void testPreventMultiThread(GroupProtocol
groupProtocol) throws Interrupt
}
}
+ @ParameterizedTest
+ @EnumSource(value = GroupProtocol.class)
+ public void testPollSendRequestForRebalance(GroupProtocol groupProtocol)
throws InterruptedException {
+ ConsumerMetadata metadata = createMetadata(subscription);
+ MockClient client = new MockClient(time, metadata);
+ initMetadata(client, Collections.singletonMap(topic, 1));
+ Node node = metadata.fetch().nodes().get(0);
+
+
client.prepareResponseFrom(FindCoordinatorResponse.prepareResponse(Errors.NONE,
groupId, node), node);
+ KafkaConsumer<String, String> consumer = newConsumer(groupProtocol,
time, client, subscription, metadata,
+ assignor, true, groupInstanceId);
+ consumer.subscribe(singletonList(topic));
Review Comment:
Hi @TaiJuWu, `application` and `network` are different threads. I'm not sure
why making `application` thread sleep can let `network` thread doesn't send
join request. Also , this test would like to make sure
`KafkaConsumer#subscribe` doesn't send join request, so we should not have
other operations to make the result. Could you elaborate more on your idea?
Thank you.
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