chickenchickenlove commented on code in PR #22561: URL: https://github.com/apache/kafka/pull/22561#discussion_r3474550739
########## streams/integration-tests/src/test/java/org/apache/kafka/streams/integration/KafkaStreamsStaticMemberIntegrationTest.java: ########## @@ -0,0 +1,596 @@ +/* + * 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.streams.integration; + +import org.apache.kafka.clients.CommonClientConfigs; +import org.apache.kafka.clients.admin.Admin; +import org.apache.kafka.clients.admin.StreamsGroupDescription; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.clients.producer.ProducerConfig; +import org.apache.kafka.common.requests.StreamsGroupHeartbeatRequest; +import org.apache.kafka.common.serialization.LongDeserializer; +import org.apache.kafka.common.serialization.LongSerializer; +import org.apache.kafka.common.serialization.Serdes; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.kafka.common.serialization.StringSerializer; +import org.apache.kafka.common.utils.MockTime; +import org.apache.kafka.common.utils.Utils; +import org.apache.kafka.coordinator.group.GroupCoordinatorConfig; +import org.apache.kafka.streams.CloseOptions; +import org.apache.kafka.streams.GroupProtocol; +import org.apache.kafka.streams.KafkaStreams; +import org.apache.kafka.streams.KeyValue; +import org.apache.kafka.streams.StreamsBuilder; +import org.apache.kafka.streams.StreamsConfig; +import org.apache.kafka.streams.Topology; +import org.apache.kafka.streams.integration.utils.EmbeddedKafkaCluster; +import org.apache.kafka.streams.integration.utils.IntegrationTestUtils; +import org.apache.kafka.streams.kstream.KStream; +import org.apache.kafka.streams.kstream.Produced; +import org.apache.kafka.test.TestUtils; + +import org.junit.jupiter.api.AfterAll; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.BeforeAll; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Tag; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.TestInfo; +import org.junit.jupiter.api.Timeout; + +import java.io.File; +import java.io.IOException; +import java.time.Duration; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; +import java.util.Optional; +import java.util.Properties; +import java.util.concurrent.atomic.AtomicInteger; + +import static org.apache.kafka.streams.utils.TestUtils.safeUniqueTestName; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertTrue; + +@Tag("integration") +@Timeout(600) +public class KafkaStreamsStaticMemberIntegrationTest { + + private static MockTime mockTime; + + protected static final String INPUT_TOPIC = "inputTopic"; + protected static final String OUTPUT_TOPIC = "outputTopic"; + protected static final String GROUP_INSTANCE_ID = "someGroupInstance"; + + protected Properties streamsConfig; + protected static KafkaStreams streams; + protected static Admin adminClient; + protected Properties commonClientConfig; + private Properties producerConfig; + protected Properties resultConsumerConfig; + private final File testFolder = TestUtils.tempDirectory(); + + public static final EmbeddedKafkaCluster CLUSTER; + + static { + final Properties brokerProps = new Properties(); + brokerProps.setProperty(GroupCoordinatorConfig.GROUP_MAX_SESSION_TIMEOUT_MS_CONFIG, Integer.toString(Integer.MAX_VALUE)); + CLUSTER = new EmbeddedKafkaCluster(1, brokerProps); + } + + @BeforeAll + public static void startCluster() throws IOException { + CLUSTER.start(); + } + + @AfterAll + public static void closeCluster() { + Utils.closeQuietly(adminClient, "admin"); + CLUSTER.stop(); + } + + @BeforeEach + public void before(final TestInfo testName) throws Exception { + mockTime = CLUSTER.time; + + final String appID = safeUniqueTestName(testName); + + commonClientConfig = new Properties(); + commonClientConfig.put(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, CLUSTER.bootstrapServers()); + + streamsConfig = new Properties(); + streamsConfig.put(StreamsConfig.APPLICATION_ID_CONFIG, appID); + streamsConfig.put(ConsumerConfig.GROUP_INSTANCE_ID_CONFIG, GROUP_INSTANCE_ID); + streamsConfig.put(StreamsConfig.STATE_DIR_CONFIG, testFolder.getPath()); + streamsConfig.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.Long().getClass()); + streamsConfig.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.String().getClass()); + streamsConfig.put(StreamsConfig.STATESTORE_CACHE_MAX_BYTES_CONFIG, 0); + streamsConfig.put(StreamsConfig.COMMIT_INTERVAL_MS_CONFIG, 100L); + streamsConfig.put(ConsumerConfig.HEARTBEAT_INTERVAL_MS_CONFIG, 100); + streamsConfig.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); + // In this test, we set the SESSION_TIMEOUT_MS_CONFIG high in order to show that the call to + // `close(CloseOptions)` can remove the application from the Consumer Groups successfully. + streamsConfig.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, Integer.MAX_VALUE); + streamsConfig.putAll(commonClientConfig); + + producerConfig = new Properties(); + producerConfig.put(ProducerConfig.ACKS_CONFIG, "all"); + producerConfig.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, LongSerializer.class); + producerConfig.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class); + producerConfig.putAll(commonClientConfig); + + resultConsumerConfig = new Properties(); + resultConsumerConfig.put(ConsumerConfig.GROUP_ID_CONFIG, appID + "-result-consumer"); + resultConsumerConfig.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); + resultConsumerConfig.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, LongDeserializer.class); + resultConsumerConfig.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); + resultConsumerConfig.putAll(commonClientConfig); + + if (adminClient == null) { + adminClient = Admin.create(commonClientConfig); + } + + CLUSTER.deleteAllTopics(); + CLUSTER.createTopic(INPUT_TOPIC, 2, 1); + CLUSTER.createTopic(OUTPUT_TOPIC, 2, 1); + + add10InputElements(); + } + + @AfterEach + public void after() throws Exception { + if (streams != null) { + streams.close(Duration.ofSeconds(30)); + streams = null; + } + Utils.delete(testFolder); + } + + @Test + public void testStaticMemberJoinRegistersThreadScopedInstanceIdsStreamsProtocol() throws Exception { + final int numStreamThreads = 2; + final String applicationId = streamsConfig.getProperty(StreamsConfig.APPLICATION_ID_CONFIG); + + streamsConfig.put(StreamsConfig.GROUP_PROTOCOL_CONFIG, GroupProtocol.STREAMS.name()); + streamsConfig.put(StreamsConfig.NUM_STREAM_THREADS_CONFIG, numStreamThreads); + streamsConfig.put(ConsumerConfig.GROUP_INSTANCE_ID_CONFIG, GROUP_INSTANCE_ID); + + streams = new KafkaStreams(setupTopologyWithoutIntermediateUserTopic(), streamsConfig); + IntegrationTestUtils.startApplicationAndWaitUntilRunning(streams); + IntegrationTestUtils.waitUntilMinKeyValueRecordsReceived(resultConsumerConfig, OUTPUT_TOPIC, 10); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == numStreamThreads && + groupDescription.members().stream().allMatch(member -> + member.instanceId() + .filter(instanceId -> instanceId.startsWith(GROUP_INSTANCE_ID + "-")) + .isPresent() && + member.memberEpoch() >= 0); + }, "Static streams members did not join with thread-scoped instance ids"); + } + + @Test + public void testStaticMemberCloseWithLeaveGroupTriggersRebalanceStreamsProtocol() throws Exception { + final File firstStateDir = TestUtils.tempDirectory(); + final File secondStateDir = TestUtils.tempDirectory(); + final String firstInstanceId = "instance-1"; + final String secondInstanceId = "instance-2"; + + final AtomicInteger secondStreamsRebalances = new AtomicInteger(0); + + try (final KafkaStreams streams1 = new KafkaStreams(setupTopologyWithoutIntermediateUserTopic(), staticStreamsConfig(firstInstanceId, firstStateDir)); + final KafkaStreams streams2 = new KafkaStreams(setupTopologyWithoutIntermediateUserTopic(), staticStreamsConfig(secondInstanceId, secondStateDir))) { + streams2.setStateListener((newState, oldState) -> { + if (newState == KafkaStreams.State.REBALANCING) { + secondStreamsRebalances.incrementAndGet(); + } + }); + + IntegrationTestUtils.startApplicationAndWaitUntilRunning(Arrays.asList(streams1, streams2)); + IntegrationTestUtils.waitUntilMinKeyValueRecordsReceived(resultConsumerConfig, OUTPUT_TOPIC, 10); + + final String applicationId = streamsConfig.getProperty(StreamsConfig.APPLICATION_ID_CONFIG); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = + adminClient.describeStreamsGroups(Collections.singletonList(applicationId)) + .describedGroups() + .get(applicationId) + .get(); + + return groupDescription.members().size() == 2; + }, "Streams group did not reach 2 static members"); + + final int initialStreams2Rebalances = secondStreamsRebalances.get(); + + streams1.close(CloseOptions.groupMembershipOperation(CloseOptions.GroupMembershipOperation.LEAVE_GROUP) + .withTimeout(Duration.ofSeconds(30))); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = + adminClient.describeStreamsGroups(Collections.singletonList(applicationId)) + .describedGroups() + .get(applicationId) + .get(); + + return groupDescription.members().size() == 1 && + groupDescription.members().stream().allMatch(member -> + member.instanceId() + .filter(instanceId -> instanceId.startsWith("instance-2-")) + .isPresent()); + }, "Streams group did not retain only the remaining static member after LEAVE_GROUP close"); + + TestUtils.waitForCondition( + () -> secondStreamsRebalances.get() > initialStreams2Rebalances, + "Remaining streams instance did not observe a rebalance after static member left the group" + ); + } finally { + Utils.delete(firstStateDir); + Utils.delete(secondStateDir); + } + } + + @Test + public void testStaticMemberCanRejoinAfterRemainInGroupStreamsProtocol() throws Exception { + final File firstStateDir = TestUtils.tempDirectory(); + final File secondStateDir = TestUtils.tempDirectory(); + final File restartedStateDir = TestUtils.tempDirectory(); + final String applicationId = streamsConfig.getProperty(StreamsConfig.APPLICATION_ID_CONFIG); + final String firstInstanceId = "instance-1"; + final String secondInstanceId = "instance-2"; + + try { + try (final KafkaStreams firstStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(firstInstanceId, firstStateDir) + ); + final KafkaStreams secondStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(secondInstanceId, secondStateDir) + )) { + IntegrationTestUtils.startApplicationAndWaitUntilRunning(Arrays.asList(firstStreams, secondStreams)); + IntegrationTestUtils.waitUntilMinKeyValueRecordsReceived(resultConsumerConfig, OUTPUT_TOPIC, 10); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 2 && + hasActiveStaticStreamsMember(groupDescription, firstInstanceId) && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Streams group did not reach 2 active static members"); + + final StreamsGroupDescription initialGroupDescription = describeStreamsGroup(applicationId); + final String firstMemberId = staticStreamsMemberId(initialGroupDescription, firstInstanceId).orElseThrow(); + + firstStreams.close(CloseOptions.groupMembershipOperation(CloseOptions.GroupMembershipOperation.REMAIN_IN_GROUP) + .withTimeout(Duration.ofSeconds(30))); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 2 && + hasStaticStreamsMemberWithMemberIdAndEpoch( + groupDescription, + firstInstanceId, + firstMemberId, + StreamsGroupHeartbeatRequest.LEAVE_GROUP_STATIC_MEMBER_EPOCH + ) && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Static streams member did not remain in group with static leave epoch"); + + try (final KafkaStreams restartedStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(firstInstanceId, restartedStateDir) + )) { + IntegrationTestUtils.startApplicationAndWaitUntilRunning(restartedStreams); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + final Optional<String> rejoinedMemberId = staticStreamsMemberId(groupDescription, firstInstanceId); + + return groupDescription.members().size() == 2 && + rejoinedMemberId.isPresent() && + !rejoinedMemberId.get().equals(firstMemberId) && + hasActiveStaticStreamsMember(groupDescription, firstInstanceId) && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Static streams member did not rejoin with a new member id after REMAIN_IN_GROUP close"); + } + } + } finally { + Utils.delete(firstStateDir); + Utils.delete(secondStateDir); + Utils.delete(restartedStateDir); + } + } + + @Test + public void testStaticMemberCanRejoinAfterLeaveGroupStreamsProtocol() throws Exception { + final File firstStateDir = TestUtils.tempDirectory(); + final File secondStateDir = TestUtils.tempDirectory(); + final File restartedStateDir = TestUtils.tempDirectory(); + final String applicationId = streamsConfig.getProperty(StreamsConfig.APPLICATION_ID_CONFIG); + final String firstInstanceId = "instance-1"; + final String secondInstanceId = "instance-2"; + + try { + try (final KafkaStreams firstStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(firstInstanceId, firstStateDir) + ); + final KafkaStreams secondStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(secondInstanceId, secondStateDir) + )) { + IntegrationTestUtils.startApplicationAndWaitUntilRunning(Arrays.asList(firstStreams, secondStreams)); + IntegrationTestUtils.waitUntilMinKeyValueRecordsReceived(resultConsumerConfig, OUTPUT_TOPIC, 10); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 2 && + hasActiveStaticStreamsMember(groupDescription, firstInstanceId) && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Streams group did not reach 2 active static members"); + + firstStreams.close(CloseOptions.groupMembershipOperation(CloseOptions.GroupMembershipOperation.LEAVE_GROUP) + .withTimeout(Duration.ofSeconds(30))); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 1 && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Static streams member did not leave the group with LEAVE_GROUP"); + + try (final KafkaStreams restartedStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(firstInstanceId, restartedStateDir) + )) { + IntegrationTestUtils.startApplicationAndWaitUntilRunning(restartedStreams); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 2 && + hasActiveStaticStreamsMember(groupDescription, firstInstanceId) && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Static streams member did not rejoin after LEAVE_GROUP close"); + } + } + } finally { + Utils.delete(firstStateDir); + Utils.delete(secondStateDir); + Utils.delete(restartedStateDir); + } + } + + @Test + public void testStaticMemberRemainingInGroupExpiresAndTriggersRebalanceStreamsProtocol() throws Exception { + final int sessionTimeoutMs = 1000; + final int heartbeatIntervalMs = 100; + final File firstStateDir = TestUtils.tempDirectory(); + final File secondStateDir = TestUtils.tempDirectory(); + final String applicationId = streamsConfig.getProperty(StreamsConfig.APPLICATION_ID_CONFIG); + final String firstInstanceId = "instance-1"; + final String secondInstanceId = "instance-2"; + + CLUSTER.setGroupHeartbeatTimeout(applicationId, heartbeatIntervalMs); + CLUSTER.setGroupSessionTimeout(applicationId, sessionTimeoutMs); + + try { + try (final KafkaStreams firstStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(firstInstanceId, firstStateDir) + ); + final KafkaStreams secondStreams = new KafkaStreams( + setupTopologyWithoutIntermediateUserTopic(), + staticStreamsConfig(secondInstanceId, secondStateDir) + )) { + IntegrationTestUtils.startApplicationAndWaitUntilRunning(Arrays.asList(firstStreams, secondStreams)); + IntegrationTestUtils.waitUntilMinKeyValueRecordsReceived(resultConsumerConfig, OUTPUT_TOPIC, 10); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 2 && + hasActiveStaticStreamsMember(groupDescription, firstInstanceId) && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Streams group did not reach 2 active static members"); + + final StreamsGroupDescription initialGroupDescription = describeStreamsGroup(applicationId); + final String firstMemberId = staticStreamsMemberId(initialGroupDescription, firstInstanceId).orElseThrow(); + + firstStreams.close(CloseOptions.groupMembershipOperation(CloseOptions.GroupMembershipOperation.REMAIN_IN_GROUP) + .withTimeout(Duration.ofSeconds(30))); + + TestUtils.waitForCondition(() -> { + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 2 && + hasStaticStreamsMemberWithMemberIdAndEpoch( + groupDescription, + firstInstanceId, + firstMemberId, + StreamsGroupHeartbeatRequest.LEAVE_GROUP_STATIC_MEMBER_EPOCH + ) && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Static streams member did not remain in group with static leave epoch"); + + final int groupEpochAfterStaticLeave = describeStreamsGroup(applicationId).groupEpoch(); + + TestUtils.waitForCondition(() -> { + mockTime.sleep(heartbeatIntervalMs); + + final StreamsGroupDescription groupDescription = describeStreamsGroup(applicationId); + return groupDescription.members().size() == 1 && + groupDescription.groupEpoch() > groupEpochAfterStaticLeave && + staticStreamsMemberId(groupDescription, firstInstanceId).isEmpty() && + hasActiveStaticStreamsMember(groupDescription, secondInstanceId); + }, "Static streams member was not removed after session timeout"); + } + } finally { + Utils.delete(firstStateDir); + Utils.delete(secondStateDir); + } + } + + @Test + public void testDuplicateStaticInstanceIdDoesNotReplaceExistingStreamsMember() throws Exception { + final File firstStateDir = TestUtils.tempDirectory(); Review Comment: Please refer to https://github.com/apache/kafka/pull/22561#discussion_r3474548798 -- This is an automated message from the Apache Git Service. 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