dengziming commented on code in PR #13432: URL: https://github.com/apache/kafka/pull/13432#discussion_r1170758199
########## clients/src/main/java/org/apache/kafka/clients/admin/internals/ListOffsetsHandler.java: ########## @@ -0,0 +1,209 @@ +/* + * 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.clients.admin.internals; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Set; +import java.util.stream.Collectors; +import org.apache.kafka.clients.admin.ListOffsetsOptions; +import org.apache.kafka.clients.admin.ListOffsetsResult.ListOffsetsResultInfo; +import org.apache.kafka.clients.admin.internals.AdminApiFuture.SimpleAdminApiFuture; +import org.apache.kafka.clients.admin.internals.AdminApiHandler.Batched; +import org.apache.kafka.common.Node; +import org.apache.kafka.common.TopicPartition; +import org.apache.kafka.common.errors.ApiException; +import org.apache.kafka.common.errors.InvalidMetadataException; +import org.apache.kafka.common.errors.RetriableException; +import org.apache.kafka.common.errors.UnsupportedVersionException; +import org.apache.kafka.common.message.ListOffsetsRequestData.ListOffsetsPartition; +import org.apache.kafka.common.message.ListOffsetsRequestData.ListOffsetsTopic; +import org.apache.kafka.common.message.ListOffsetsResponseData.ListOffsetsPartitionResponse; +import org.apache.kafka.common.message.ListOffsetsResponseData.ListOffsetsTopicResponse; +import org.apache.kafka.common.protocol.Errors; +import org.apache.kafka.common.requests.AbstractResponse; +import org.apache.kafka.common.requests.ListOffsetsRequest; +import org.apache.kafka.common.requests.ListOffsetsResponse; +import org.apache.kafka.common.utils.CollectionUtils; +import org.apache.kafka.common.utils.LogContext; +import org.slf4j.Logger; + +public final class ListOffsetsHandler extends Batched<TopicPartition, ListOffsetsResultInfo> { + + private final Map<TopicPartition, Long> offsetTimestampsByPartition; + private final ListOffsetsOptions options; + private final Logger log; + private final AdminApiLookupStrategy<TopicPartition> lookupStrategy; + + public ListOffsetsHandler( + Map<TopicPartition, Long> offsetTimestampsByPartition, + ListOffsetsOptions options, + LogContext logContext + ) { + this.offsetTimestampsByPartition = offsetTimestampsByPartition; + this.options = options; + this.log = logContext.logger(ListOffsetsHandler.class); + this.lookupStrategy = new PartitionLeaderStrategy(logContext); + } + + @Override + public String apiName() { + return "listOffsets"; + } + + @Override + public AdminApiLookupStrategy<TopicPartition> lookupStrategy() { + return this.lookupStrategy; + } + + @Override + ListOffsetsRequest.Builder buildBatchedRequest(int brokerId, Set<TopicPartition> keys) { + Map<String, ListOffsetsTopic> topicsByName = CollectionUtils.groupPartitionsByTopic( + keys, + topicName -> new ListOffsetsTopic().setName(topicName), + (listOffsetsTopic, partitionId) -> { + TopicPartition topicPartition = new TopicPartition(listOffsetsTopic.name(), partitionId); + long offsetTimestamp = offsetTimestampsByPartition.get(topicPartition); + listOffsetsTopic.partitions().add( + new ListOffsetsPartition() + .setPartitionIndex(partitionId) + .setTimestamp(offsetTimestamp)); + }); + boolean supportsMaxTimestamp = keys + .stream() + .anyMatch(key -> offsetTimestampsByPartition.get(key) == ListOffsetsRequest.MAX_TIMESTAMP); + + return ListOffsetsRequest.Builder + .forConsumer(true, options.isolationLevel(), supportsMaxTimestamp) + .setTargetTimes(new ArrayList<>(topicsByName.values())); + } + + @Override + public ApiResult<TopicPartition, ListOffsetsResultInfo> handleResponse( + Node broker, + Set<TopicPartition> keys, + AbstractResponse abstractResponse + ) { + ListOffsetsResponse response = (ListOffsetsResponse) abstractResponse; + Map<TopicPartition, ListOffsetsResultInfo> completed = new HashMap<>(); + Map<TopicPartition, Throwable> failed = new HashMap<>(); + List<TopicPartition> unmapped = new ArrayList<>(); + Set<TopicPartition> retriable = new HashSet<>(); + + for (ListOffsetsTopicResponse topic : response.topics()) { + for (ListOffsetsPartitionResponse partition : topic.partitions()) { + TopicPartition topicPartition = new TopicPartition(topic.name(), partition.partitionIndex()); + Errors error = Errors.forCode(partition.errorCode()); + if (!offsetTimestampsByPartition.containsKey(topicPartition)) { + log.warn("ListOffsets response includes unknown topic partition {}", topicPartition); + } else if (error == Errors.NONE) { + Optional<Integer> leaderEpoch = (partition.leaderEpoch() == ListOffsetsResponse.UNKNOWN_EPOCH) + ? Optional.empty() + : Optional.of(partition.leaderEpoch()); + completed.put( + topicPartition, + new ListOffsetsResultInfo(partition.offset(), partition.timestamp(), leaderEpoch)); + } else { + handlePartitionError(topicPartition, error, failed, unmapped, retriable); + } + } + } + + // Sanity-check if the current leader for these partitions returned results for all of them + for (TopicPartition topicPartition : keys) { + if (unmapped.isEmpty() + && !completed.containsKey(topicPartition) + && !failed.containsKey(topicPartition) + && !retriable.contains(topicPartition) + ) { + ApiException sanityCheckException = new ApiException( + "The response from broker " + broker.id() + + " did not contain a result for topic partition " + topicPartition); + log.error( + "ListOffsets request for topic partition {} failed sanity check", + topicPartition, + sanityCheckException); + failed.put(topicPartition, sanityCheckException); + } + } + + return new ApiResult<>(completed, failed, unmapped); + } + + private void handlePartitionError( + TopicPartition topicPartition, + Errors error, + Map<TopicPartition, Throwable> failed, + List<TopicPartition> unmapped, + Set<TopicPartition> retriable + ) { + ApiException apiException = error.exception(); + if (apiException instanceof InvalidMetadataException) { + log.debug( + "ListOffsets lookup request for topic partition {} will be retried due to invalid metadata", + topicPartition, + apiException); + unmapped.add(topicPartition); Review Comment: I rechecked the old logic of `KafkaAdminClient.getListOffsetsCalls`, we firstly find the leader of each partition and invoke `completeExceptionally` if a partition are not bind to a leader, there is no logic of retrying lookup a leader for a partition, so it's OK even not to retry lookup, right? I think we should be careful to retry from lookup after inspecting all possible exceptions in `KafkaApis.handleListOffsetRequest`, it's only necessary to retry on`NotLeaderOrFollowerException` and `LeaderNotAvailableException`, and for other `MetadataException`, for example, `KafkaStorageException`, it's nonsense to retry. In the long run, we can maintain this information in each `lookupStrategy`, but for now, we just retry on these 2 cases similar to `DescribeProducersHandler` and `DescribeTransactionsHandler`. ########## clients/src/main/java/org/apache/kafka/clients/admin/internals/AdminApiHandler.java: ########## @@ -70,6 +71,23 @@ */ ApiResult<K, V> handleResponse(Node broker, Set<K> keys, AbstractResponse response); + /** + * Callback that is invoked when a fulfillment request hits an UnsupportedVersionException. + * Keys for which the exception cannot be handled and the request shouldn't be retried must be mapped + * to an error and returned. The request will then be retried for the remainder of the keys. + * + * @return The failure mappings for the keys for which the exception cannot be handled and the + * request shouldn't be retried. If the exception cannot be handled all initial keys will be in + * the returned map. + */ + default Map<K, Throwable> handleUnsupportedVersionException( + int brokerId, Review Comment: nit: use Node to keep it in consistent with `handleResponse`. -- 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
