guozhangwang commented on code in PR #13369: URL: https://github.com/apache/kafka/pull/13369#discussion_r1142674372
########## streams/src/test/java/org/apache/kafka/streams/integration/StandbyTaskEOSMultiRebalanceIntegrationTest.java: ########## @@ -0,0 +1,304 @@ +/* + * 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.consumer.ConsumerConfig; +import org.apache.kafka.clients.consumer.ConsumerRecord; +import org.apache.kafka.common.serialization.IntegerDeserializer; +import org.apache.kafka.common.serialization.IntegerSerializer; +import org.apache.kafka.common.serialization.Serdes; +import org.apache.kafka.streams.KafkaStreams; +import org.apache.kafka.streams.KeyValue; +import org.apache.kafka.streams.StoreQueryParameters; +import org.apache.kafka.streams.StreamsBuilder; +import org.apache.kafka.streams.StreamsConfig; +import org.apache.kafka.streams.integration.utils.EmbeddedKafkaCluster; +import org.apache.kafka.streams.integration.utils.IntegrationTestUtils; +import org.apache.kafka.streams.kstream.Transformer; +import org.apache.kafka.streams.processor.ProcessorContext; +import org.apache.kafka.streams.state.KeyValueStore; +import org.apache.kafka.streams.state.QueryableStoreTypes; +import org.apache.kafka.streams.state.Stores; +import org.apache.kafka.test.IntegrationTest; +import org.apache.kafka.test.TestUtils; +import org.hamcrest.Matchers; +import org.junit.After; +import org.junit.AfterClass; +import org.junit.Before; +import org.junit.BeforeClass; +import org.junit.Test; +import org.junit.experimental.categories.Category; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.time.Duration; +import java.util.Collections; +import java.util.List; +import java.util.Properties; +import java.util.UUID; +import java.util.stream.Collectors; +import java.util.stream.IntStream; + +import static org.apache.kafka.streams.integration.utils.IntegrationTestUtils.startApplicationAndWaitUntilRunning; +import static org.apache.kafka.test.TestUtils.waitForCondition; +import static org.hamcrest.MatcherAssert.assertThat; +import static org.hamcrest.Matchers.is; + +/** + * An integration test to verify EOS properties when using Caching and Standby replicas + * while tasks are being redistributed after re-balancing event. + * The intent is not that this test should be merged into the repo but only provided for evidence on how to reproduce. + * One test fail and two test pass reliably on an i7-8750H CPU @ 2.20GHz × 12 with 32 GiB Memory + */ +@Category(IntegrationTest.class) +@SuppressWarnings("deprecation") Review Comment: I actually tried it :) The issue is that to replace it we'd need to call `context.forward(key, value)` in which case we need to declare the new processor context with template types `Integer, Integer` to avoid overloaded functions in-distinguishment. But that class would then need to reference the `RecordMetadata` etc, which involves more changes so I stopped there. If people feel strong about that I can try going ahead and bite the bullet to revamp the whole test client. -- 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
