showuon commented on code in PR #12748:
URL: https://github.com/apache/kafka/pull/12748#discussion_r1035599539
##########
clients/src/test/java/org/apache/kafka/clients/consumer/CooperativeStickyAssignorTest.java:
##########
@@ -116,6 +130,74 @@ public void
testAllConsumersHaveOwnedPartitionInvalidatedWhenClaimedByMultipleCo
assertTrue(isFullyBalanced(assignment));
}
+ @Test
+ public void testMemberDataWithInconsistentData() {
+ Map<String, Integer> partitionsPerTopic = new HashMap<>();
+ partitionsPerTopic.put(topic, 2);
+ List<TopicPartition> ownedPartitionsInUserdata = partitions(tp1);
+ List<TopicPartition> ownedPartitionsInSubscription = partitions(tp0);
+
+ assignor.onAssignment(new
ConsumerPartitionAssignor.Assignment(ownedPartitionsInUserdata), new
ConsumerGroupMetadata(groupId, generationId, consumer1, Optional.empty()));
+ ByteBuffer userDataWithHigherGenerationId =
assignor.subscriptionUserData(new HashSet<>(topics(topic)));
+ // The owned partitions and generation id are provided in user data
and different owned partition is provided in subscription without generation id
+ // If subscription provides no generation id, we'll honor the
generation id in userData and owned partitions in subscription
+ Subscription subscription = new Subscription(topics(topic),
userDataWithHigherGenerationId, ownedPartitionsInSubscription);
+
+ AbstractStickyAssignor.MemberData memberData =
memberData(subscription);
+ // In CooperativeStickyAssignor, we'll serialize owned partition in
subscription into userData
Review Comment:
You're right! In CooperativeStickyAssignor, only the generation is put in
user data. Updated to:
`// In CooperativeStickyAssignor, we only serialize generation id into
userData`
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