dajac commented on a change in pull request #11688:
URL: https://github.com/apache/kafka/pull/11688#discussion_r802484108
##########
File path:
clients/src/test/java/org/apache/kafka/clients/consumer/internals/ConsumerCoordinatorTest.java
##########
@@ -1550,6 +1573,34 @@ public void testMetadataChangeTriggersRebalance() {
assertTrue(coordinator.rejoinNeededOrPending());
}
+ @Test
+ public void testStaticLeaderRejoinsGroupAndCanTriggersRebalance() {
+ // ensure metadata is up-to-date for leader
+ subscriptions.subscribe(singleton(topic1), rebalanceListener);
+ client.updateMetadata(metadataResponse);
+
+ client.prepareResponse(groupCoordinatorResponse(node, Errors.NONE));
+ coordinator.ensureCoordinatorReady(time.timer(Long.MAX_VALUE));
+
+ // the leader is responsible for picking up metadata changes and
forcing a group rebalance.
+ // note that `partitionAssignor.prepare` is not called therefore
calling `partitionAssignor.assign`
+ // will throw a IllegalStateException. this indirectly verifies that
`assign` is correctly skipped.
+ Map<String, List<String>> memberSubscriptions =
singletonMap(consumerId, singletonList(topic1));
Review comment:
Sure. Let me add another test.
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