fvaleri commented on code in PR #14059: URL: https://github.com/apache/kafka/pull/14059#discussion_r1273659935
########## tools/src/main/java/org/apache/kafka/tools/ReplicaVerificationTool.java: ########## @@ -0,0 +1,744 @@ +/* + * 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.tools; + +import joptsimple.OptionParser; +import joptsimple.OptionSpec; +import org.apache.kafka.clients.ApiVersions; +import org.apache.kafka.clients.ClientRequest; +import org.apache.kafka.clients.ClientResponse; +import org.apache.kafka.clients.ClientUtils; +import org.apache.kafka.clients.CommonClientConfigs; +import org.apache.kafka.clients.ManualMetadataUpdater; +import org.apache.kafka.clients.NetworkClient; +import org.apache.kafka.clients.NetworkClientUtils; +import org.apache.kafka.clients.admin.Admin; +import org.apache.kafka.clients.admin.ListTopicsOptions; +import org.apache.kafka.clients.admin.TopicDescription; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.clients.consumer.KafkaConsumer; +import org.apache.kafka.common.Node; +import org.apache.kafka.common.TopicPartition; +import org.apache.kafka.common.TopicPartitionReplica; +import org.apache.kafka.common.Uuid; +import org.apache.kafka.common.message.FetchResponseData; +import org.apache.kafka.common.metrics.Metrics; +import org.apache.kafka.common.network.ChannelBuilder; +import org.apache.kafka.common.network.NetworkReceive; +import org.apache.kafka.common.network.Selectable; +import org.apache.kafka.common.network.Selector; +import org.apache.kafka.common.protocol.ApiKeys; +import org.apache.kafka.common.protocol.Errors; +import org.apache.kafka.common.record.RecordBatch; +import org.apache.kafka.common.requests.AbstractRequest; +import org.apache.kafka.common.requests.FetchRequest; +import org.apache.kafka.common.requests.FetchResponse; +import org.apache.kafka.common.requests.ListOffsetsRequest; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.kafka.common.utils.Exit; +import org.apache.kafka.common.utils.LogContext; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.common.utils.Utils; +import org.apache.kafka.server.util.CommandDefaultOptions; +import org.apache.kafka.server.util.CommandLineUtils; +import org.apache.kafka.server.util.ShutdownableThread; +import org.apache.kafka.server.util.TopicFilter; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.net.SocketTimeoutException; +import java.text.SimpleDateFormat; +import java.util.Arrays; +import java.util.Collection; +import java.util.Date; +import java.util.HashMap; +import java.util.Iterator; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Properties; +import java.util.Set; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.atomic.AtomicInteger; +import java.util.concurrent.atomic.AtomicReference; +import java.util.function.Consumer; +import java.util.function.Function; +import java.util.regex.Pattern; +import java.util.regex.PatternSyntaxException; +import java.util.stream.Collectors; + +import static java.lang.String.format; + +/** + * For verifying the consistency among replicas. + * <p> + * 1. start a fetcher on every broker + * 2. each fetcher does the following + * 2.1 issues fetch request + * 2.2 puts the fetched result in a shared buffer + * 2.3 waits for all other fetchers to finish step 2.2 + * 2.4 one of the fetchers verifies the consistency of fetched results among replicas + * <p> + * The consistency verification is up to the high watermark. The tool reports the + * max lag between the verified offset and the high watermark among all partitions. + * <p> + * If a broker goes down, the verification of the partitions on that broker is delayed + * until the broker is up again. + * <p> + * Caveats: + * 1. The tool needs all brokers to be up at startup time. + * 2. The tool doesn't handle out of range offsets. + */ +public class ReplicaVerificationTool { + private static final Logger LOG = LoggerFactory.getLogger(ReplicaVerificationTool.class); + private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS"); + + public static void main(String[] args) { + try { + ReplicaVerificationToolOptions options = new ReplicaVerificationToolOptions(args); + // getting topic metadata + LOG.info("Getting topic metadata..."); + String brokerList = options.brokerHostsAndPorts(); + + try (Admin adminClient = createAdminClient(brokerList)) { + Collection<TopicDescription> topicsMetadata = listTopicsMetadata(adminClient); + Map<Integer, Node> brokerInfo = brokerDetails(adminClient); + + Map<String, Uuid> topicIds = topicsMetadata.stream().collect(Collectors.toMap(TopicDescription::name, TopicDescription::topicId)); + + List<TopicDescription> filteredTopicMetadata = topicsMetadata.stream().filter( + topicMetadata -> options.topicsIncludeFilter().isTopicAllowed(topicMetadata.name(), false) + ).collect(Collectors.toList()); + + if (filteredTopicMetadata.isEmpty()) { + LOG.error("No topics found. {} if specified, is either filtering out all topics or there is no topic.", options.topicsIncludeOpt); + Exit.exit(1); + } + + List<TopicPartitionReplica> topicPartitionReplicas = filteredTopicMetadata.stream().flatMap( + topicMetadata -> topicMetadata.partitions().stream().flatMap( + partitionMetadata -> partitionMetadata.replicas().stream().map( + node -> new TopicPartitionReplica(topicMetadata.name(), partitionMetadata.partition(), node.id()) + ) + ) + ).collect(Collectors.toList()); + LOG.debug("Selected topic partitions: {}", topicPartitionReplicas); + + Map<Integer, List<TopicPartition>> brokerToTopicPartitions = topicPartitionReplicas.stream() + .collect(Collectors.groupingBy( + TopicPartitionReplica::brokerId, + Collectors.mapping( + replica -> new TopicPartition(replica.topic(), replica.partition()), + Collectors.toList() + ) + )); + LOG.debug("Topic partitions per broker: {}", brokerToTopicPartitions); + + Map<TopicPartition, Integer> expectedReplicasPerTopicPartition = topicPartitionReplicas.stream() + .collect(Collectors.groupingBy( + replica -> new TopicPartition(replica.topic(), replica.partition()), + Collectors.collectingAndThen( + Collectors.toList(), + List::size + ) + )); + LOG.debug("Expected replicas per topic partition: {}", expectedReplicasPerTopicPartition); + + List<TopicPartition> topicPartitions = filteredTopicMetadata.stream() + .flatMap(topicMetadata -> topicMetadata.partitions().stream() + .map(partitionMetadata -> new TopicPartition(topicMetadata.name(), partitionMetadata.partition())) + ) + .collect(Collectors.toList()); + + Properties consumerProps = consumerConfig(brokerList); + + ReplicaBuffer replicaBuffer = new ReplicaBuffer(expectedReplicasPerTopicPartition, + initialOffsets(topicPartitions, consumerProps, options.initialOffsetTime()), + brokerToTopicPartitions.size(), options.reportInterval()); + + // create all replica fetcher threads + int verificationBrokerId = brokerToTopicPartitions.entrySet().iterator().next().getKey(); + AtomicInteger counter = new AtomicInteger(0); + List<ReplicaFetcher> fetcherThreads = brokerToTopicPartitions.entrySet().stream() + .map(entry -> { + int brokerId = entry.getKey(); + Iterable<TopicPartition> partitions = entry.getValue(); + return new ReplicaFetcher( + "ReplicaFetcher-" + brokerId, + brokerInfo.get(brokerId), + partitions, + topicIds, + replicaBuffer, + options.fetchSize(), + options.maxWaitMs(), + 1, + brokerId == verificationBrokerId, + consumerProps, + counter.incrementAndGet() + ); + }) + .collect(Collectors.toList()); + + Runtime.getRuntime().addShutdownHook(new Thread(() -> { Review Comment: sure -- This is an automated message from the Apache Git Service. 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