dajac commented on code in PR #17958: URL: https://github.com/apache/kafka/pull/17958#discussion_r1863479048
########## core/src/test/scala/unit/kafka/server/ConsumerGroupDescribeRequestTest.scala: ########## @@ -213,4 +216,111 @@ class ConsumerGroupDescribeRequestTest(cluster: ClusterInstance) extends GroupCo admin.close() } } + + @ClusterTest( + types = Array(Type.KRAFT), + serverProperties = Array( + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_PARTITIONS_CONFIG, value = "1"), + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG, value = "1") + ) + ) + def testConsumerGroupDescribeWithMigrationMember(): Unit = { + // Creates the __consumer_offsets topics because it won't be created automatically + // in this test because it does not use FindCoordinator API. + createOffsetsTopic() + + // Create the topic. + val topicName = "foo" + createTopic( + topic = "foo", + numPartitions = 3 + ) + + val groupId = "grp" + + // Classic member 1 joins the classic group. + val memberId1 = joinDynamicConsumerGroupWithOldProtocol( + groupId = groupId, + metadata = ConsumerProtocol.serializeSubscription( + new ConsumerPartitionAssignor.Subscription( + Collections.singletonList(topicName), + null, + List().asJava + ) + ).array, + assignment = ConsumerProtocol.serializeAssignment( + new ConsumerPartitionAssignor.Assignment( + List(0, 1, 2).map(p => new TopicPartition(topicName, p)).asJava + ) + ).array + )._1 + + // The joining request with a consumer group member 2 is accepted. + consumerGroupHeartbeat( + groupId = groupId, + memberId = "member-2", + rebalanceTimeoutMs = 5 * 60 * 1000, + subscribedTopicNames = List(topicName), + topicPartitions = List.empty, + expectedError = Errors.NONE + ).memberId() Review Comment: nit: It seems that we could remove `memberId()`. ########## core/src/test/scala/unit/kafka/server/ConsumerGroupDescribeRequestTest.scala: ########## @@ -213,4 +216,111 @@ class ConsumerGroupDescribeRequestTest(cluster: ClusterInstance) extends GroupCo admin.close() } } + + @ClusterTest( + types = Array(Type.KRAFT), + serverProperties = Array( + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_PARTITIONS_CONFIG, value = "1"), + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG, value = "1") + ) + ) + def testConsumerGroupDescribeWithMigrationMember(): Unit = { + // Creates the __consumer_offsets topics because it won't be created automatically + // in this test because it does not use FindCoordinator API. + createOffsetsTopic() + + // Create the topic. + val topicName = "foo" + createTopic( + topic = "foo", + numPartitions = 3 + ) + + val groupId = "grp" + + // Classic member 1 joins the classic group. + val memberId1 = joinDynamicConsumerGroupWithOldProtocol( + groupId = groupId, + metadata = ConsumerProtocol.serializeSubscription( + new ConsumerPartitionAssignor.Subscription( + Collections.singletonList(topicName), + null, + List().asJava + ) + ).array, + assignment = ConsumerProtocol.serializeAssignment( + new ConsumerPartitionAssignor.Assignment( + List(0, 1, 2).map(p => new TopicPartition(topicName, p)).asJava + ) + ).array + )._1 + + // The joining request with a consumer group member 2 is accepted. + consumerGroupHeartbeat( + groupId = groupId, + memberId = "member-2", + rebalanceTimeoutMs = 5 * 60 * 1000, + subscribedTopicNames = List(topicName), + topicPartitions = List.empty, + expectedError = Errors.NONE + ).memberId() + + // version 0 doesn't have isClassic field, so isClassic field on member 1 is false + val actual = consumerGroupDescribe( + groupIds = List(groupId), + includeAuthorizedOperations = true, + version = 0.toShort, + ) + assertEquals(1, actual.size) + val group = actual.head + val member1 = group.members().asScala.find(_.memberId() == memberId1) + assertNotNull(member1) + assertFalse(member1.get.isClassic) + + // starting from version 1, there is isClassic field in ConsumerGroupDescribeResponse + for (version <- 1.toShort to ApiKeys.CONSUMER_GROUP_DESCRIBE.latestVersion(isUnstableApiEnabled)) { + val actual = consumerGroupDescribe( + groupIds = List(groupId), + includeAuthorizedOperations = true, + version = version.toShort, + ) + assertEquals(1, actual.size) + val group = actual.head + val member1 = group.members().asScala.find(_.memberId() == memberId1) + assertNotNull(member1) + assertTrue(member1.get.isClassic) + } Review Comment: I wonder if we could merge this with the previous call for version 0. Then we could use define the expected value for isClassic based on the version. What do you think? ########## core/src/test/scala/unit/kafka/server/ConsumerGroupDescribeRequestTest.scala: ########## @@ -213,4 +216,111 @@ class ConsumerGroupDescribeRequestTest(cluster: ClusterInstance) extends GroupCo admin.close() } } + + @ClusterTest( + types = Array(Type.KRAFT), + serverProperties = Array( + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_PARTITIONS_CONFIG, value = "1"), + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG, value = "1") + ) + ) + def testConsumerGroupDescribeWithMigrationMember(): Unit = { + // Creates the __consumer_offsets topics because it won't be created automatically + // in this test because it does not use FindCoordinator API. + createOffsetsTopic() + + // Create the topic. + val topicName = "foo" + createTopic( + topic = "foo", + numPartitions = 3 + ) + + val groupId = "grp" + + // Classic member 1 joins the classic group. + val memberId1 = joinDynamicConsumerGroupWithOldProtocol( + groupId = groupId, + metadata = ConsumerProtocol.serializeSubscription( + new ConsumerPartitionAssignor.Subscription( + Collections.singletonList(topicName), + null, + List().asJava + ) + ).array, + assignment = ConsumerProtocol.serializeAssignment( + new ConsumerPartitionAssignor.Assignment( + List(0, 1, 2).map(p => new TopicPartition(topicName, p)).asJava + ) + ).array + )._1 + + // The joining request with a consumer group member 2 is accepted. + consumerGroupHeartbeat( + groupId = groupId, + memberId = "member-2", + rebalanceTimeoutMs = 5 * 60 * 1000, + subscribedTopicNames = List(topicName), + topicPartitions = List.empty, + expectedError = Errors.NONE + ).memberId() + + // version 0 doesn't have isClassic field, so isClassic field on member 1 is false + val actual = consumerGroupDescribe( + groupIds = List(groupId), + includeAuthorizedOperations = true, + version = 0.toShort, + ) + assertEquals(1, actual.size) + val group = actual.head + val member1 = group.members().asScala.find(_.memberId() == memberId1) + assertNotNull(member1) + assertFalse(member1.get.isClassic) + + // starting from version 1, there is isClassic field in ConsumerGroupDescribeResponse + for (version <- 1.toShort to ApiKeys.CONSUMER_GROUP_DESCRIBE.latestVersion(isUnstableApiEnabled)) { + val actual = consumerGroupDescribe( + groupIds = List(groupId), + includeAuthorizedOperations = true, + version = version.toShort, + ) + assertEquals(1, actual.size) + val group = actual.head + val member1 = group.members().asScala.find(_.memberId() == memberId1) + assertNotNull(member1) + assertTrue(member1.get.isClassic) + } + + // Classic member 1 leaves group. + leaveGroup( + groupId = groupId, + memberId = memberId1, + useNewProtocol = false, + version = ApiKeys.LEAVE_GROUP.latestVersion(isUnstableApiEnabled) + ) + + // member 1 joins as consumer group member + consumerGroupHeartbeat( + groupId = groupId, + memberId = memberId1, + rebalanceTimeoutMs = 5 * 60 * 1000, + subscribedTopicNames = List("foo"), + topicPartitions = List.empty, + expectedError = Errors.NONE + ) + + // there is no classic member in the group Review Comment: nit: I have noticed that the style of your comments are a bit inconsistent. It would be great if they could all start with a capital letter and finish with a dot. ########## core/src/test/scala/unit/kafka/server/ConsumerGroupDescribeRequestTest.scala: ########## @@ -213,4 +216,111 @@ class ConsumerGroupDescribeRequestTest(cluster: ClusterInstance) extends GroupCo admin.close() } } + + @ClusterTest( + types = Array(Type.KRAFT), + serverProperties = Array( + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_PARTITIONS_CONFIG, value = "1"), + new ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG, value = "1") + ) + ) + def testConsumerGroupDescribeWithMigrationMember(): Unit = { + // Creates the __consumer_offsets topics because it won't be created automatically + // in this test because it does not use FindCoordinator API. + createOffsetsTopic() + + // Create the topic. + val topicName = "foo" + createTopic( + topic = "foo", + numPartitions = 3 + ) + + val groupId = "grp" + + // Classic member 1 joins the classic group. + val memberId1 = joinDynamicConsumerGroupWithOldProtocol( + groupId = groupId, + metadata = ConsumerProtocol.serializeSubscription( + new ConsumerPartitionAssignor.Subscription( + Collections.singletonList(topicName), + null, + List().asJava + ) + ).array, + assignment = ConsumerProtocol.serializeAssignment( + new ConsumerPartitionAssignor.Assignment( + List(0, 1, 2).map(p => new TopicPartition(topicName, p)).asJava + ) + ).array + )._1 + + // The joining request with a consumer group member 2 is accepted. + consumerGroupHeartbeat( + groupId = groupId, + memberId = "member-2", + rebalanceTimeoutMs = 5 * 60 * 1000, + subscribedTopicNames = List(topicName), + topicPartitions = List.empty, + expectedError = Errors.NONE + ).memberId() + + // version 0 doesn't have isClassic field, so isClassic field on member 1 is false + val actual = consumerGroupDescribe( + groupIds = List(groupId), + includeAuthorizedOperations = true, + version = 0.toShort, + ) + assertEquals(1, actual.size) + val group = actual.head + val member1 = group.members().asScala.find(_.memberId() == memberId1) + assertNotNull(member1) + assertFalse(member1.get.isClassic) Review Comment: nit: We usually validate the full response like we did in the other tests. 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