abhijeetk88 commented on code in PR #14127: URL: https://github.com/apache/kafka/pull/14127#discussion_r1291235847
########## storage/src/test/java/org/apache/kafka/server/log/remote/metadata/storage/TopicBasedRemoteLogMetadataManagerMultipleSubscriptionsTest.java: ########## @@ -0,0 +1,176 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.kafka.server.log.remote.metadata.storage; + + +import kafka.utils.EmptyTestInfo; +import org.apache.kafka.common.TopicIdPartition; +import org.apache.kafka.common.TopicPartition; +import org.apache.kafka.common.Uuid; +import org.apache.kafka.common.errors.TimeoutException; +import org.apache.kafka.common.utils.MockTime; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.server.log.remote.storage.RemoteLogSegmentId; +import org.apache.kafka.server.log.remote.storage.RemoteLogSegmentMetadata; +import org.apache.kafka.server.log.remote.storage.RemoteStorageException; +import org.apache.kafka.test.TestUtils; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import scala.collection.JavaConverters; +import scala.collection.Seq; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.concurrent.ExecutionException; + +@SuppressWarnings("deprecation") // Added for Scala 2.12 compatibility for usages of JavaConverters +public class TopicBasedRemoteLogMetadataManagerMultipleSubscriptionsTest { + private static final Logger log = LoggerFactory.getLogger(TopicBasedRemoteLogMetadataManagerMultipleSubscriptionsTest.class); + + private static final int SEG_SIZE = 1024 * 1024; + + private final Time time = new MockTime(1); + private final TopicBasedRemoteLogMetadataManagerHarness remoteLogMetadataManagerHarness = new TopicBasedRemoteLogMetadataManagerHarness(); + + private TopicBasedRemoteLogMetadataManager rlmm() { + return remoteLogMetadataManagerHarness.remoteLogMetadataManager(); + } + + @BeforeEach + public void setup() { + // Start the cluster only. + remoteLogMetadataManagerHarness.setUp(new EmptyTestInfo()); + } + + @AfterEach + public void teardown() throws IOException { + remoteLogMetadataManagerHarness.close(); + } + + @Test + public void testMultiplePartitionSubscriptions() throws Exception { + // Create topics. + String leaderTopic = "leader"; + HashMap<Object, Seq<Object>> assignedLeaderTopicReplicas = new HashMap<>(); + List<Object> leaderTopicReplicas = new ArrayList<>(); + // Set broker id 0 as the first entry which is taken as the leader. + leaderTopicReplicas.add(0); + leaderTopicReplicas.add(1); + leaderTopicReplicas.add(2); + assignedLeaderTopicReplicas.put(0, JavaConverters.asScalaBuffer(leaderTopicReplicas)); + remoteLogMetadataManagerHarness.createTopicWithAssignment(leaderTopic, + JavaConverters.mapAsScalaMap(assignedLeaderTopicReplicas), + remoteLogMetadataManagerHarness.listenerName()); + + String followerTopic = "follower"; + HashMap<Object, Seq<Object>> assignedFollowerTopicReplicas = new HashMap<>(); + List<Object> followerTopicReplicas = new ArrayList<>(); + // Set broker id 1 as the first entry which is taken as the leader. + followerTopicReplicas.add(1); + followerTopicReplicas.add(2); + followerTopicReplicas.add(0); + assignedFollowerTopicReplicas.put(0, JavaConverters.asScalaBuffer(followerTopicReplicas)); + remoteLogMetadataManagerHarness.createTopicWithAssignment( + followerTopic, JavaConverters.mapAsScalaMap(assignedFollowerTopicReplicas), + remoteLogMetadataManagerHarness.listenerName()); + + String topicWithNoMessages = "no-messages-topic"; + HashMap<Object, Seq<Object>> assignedTopicReplicas = new HashMap<>(); + List<Object> noMessagesTopicReplicas = new ArrayList<>(); + // Set broker id 1 as the first entry which is taken as the leader. + noMessagesTopicReplicas.add(1); + noMessagesTopicReplicas.add(2); + noMessagesTopicReplicas.add(0); + assignedTopicReplicas.put(0, JavaConverters.asScalaBuffer(noMessagesTopicReplicas)); + remoteLogMetadataManagerHarness.createTopicWithAssignment( + topicWithNoMessages, JavaConverters.mapAsScalaMap(assignedTopicReplicas), + remoteLogMetadataManagerHarness.listenerName()); + + final TopicIdPartition leaderTopicIdPartition = new TopicIdPartition(Uuid.randomUuid(), new TopicPartition(leaderTopic, 0)); + final TopicIdPartition followerTopicIdPartition = new TopicIdPartition(Uuid.randomUuid(), new TopicPartition(followerTopic, 0)); + final TopicIdPartition emptyTopicIdPartition = new TopicIdPartition(Uuid.randomUuid(), new TopicPartition(topicWithNoMessages, 0)); + + RemoteLogMetadataTopicPartitioner partitioner = new RemoteLogMetadataTopicPartitioner(10) { + @Override + public int metadataPartition(TopicIdPartition topicIdPartition) { + // Always return partition 0 except for noMessagesTopicIdPartition. So that, any new user + // partition(other than noMessagesTopicIdPartition) added to RLMM will use the same metadata partition. + // That will make the secondary consumer assignment. + if (emptyTopicIdPartition.equals(topicIdPartition)) { + return 1; + } else { + return 0; + } + } + }; + + remoteLogMetadataManagerHarness.initializeRemoteLogMetadataManager(Collections.emptySet(), true, partitioner); + + // Add segments for these partitions but an exception is received as they have not yet been subscribed. + // These messages would have been published to the respective metadata topic partitions but the ConsumerManager + // has not yet been subscribing as they are not yet registered. + RemoteLogSegmentMetadata leaderSegmentMetadata = new RemoteLogSegmentMetadata(new RemoteLogSegmentId(leaderTopicIdPartition, Uuid.randomUuid()), + 0, 100, -1L, 0, + time.milliseconds(), SEG_SIZE, Collections.singletonMap(0, 0L)); + Assertions.assertThrows(ExecutionException.class, () -> rlmm().addRemoteLogSegmentMetadata(leaderSegmentMetadata).get(), + "org.apache.kafka.common.KafkaException: This consumer is not assigned to the target partition 0. Partitions currently assigned: []"); Review Comment: My bad, I actually want to asset that it fails with that message. We are trying to assert that if we try to add the remote log segment metadata entry, it will throw an exception since the partition is not subscribed yet. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
