lianetm commented on code in PR #14364: URL: https://github.com/apache/kafka/pull/14364#discussion_r1334645635
########## clients/src/main/java/org/apache/kafka/clients/consumer/internals/HeartbeatRequestManager.java: ########## @@ -0,0 +1,294 @@ +/* + * 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.consumer.internals; + +import org.apache.kafka.clients.CommonClientConfigs; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.common.KafkaException; +import org.apache.kafka.common.errors.GroupAuthorizationException; +import org.apache.kafka.common.message.ConsumerGroupHeartbeatRequestData; +import org.apache.kafka.common.protocol.Errors; +import org.apache.kafka.common.requests.ConsumerGroupHeartbeatRequest; +import org.apache.kafka.common.requests.ConsumerGroupHeartbeatResponse; +import org.apache.kafka.common.utils.LogContext; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.common.utils.Timer; +import org.slf4j.Logger; + +import java.util.ArrayList; +import java.util.Collections; + +/** + * Manages the request creation and response handling for the heartbeat. The module creates a {@link ConsumerGroupHeartbeatRequest} + * using the state stored in the {@link MembershipManager} and enqueue it to the network queue to be sent out. Once + * the response is received, the module will update the state in the {@link MembershipManager} and handle any errors. + * + * The manager only emits heartbeat when the member is in a group, tries to join a group, or tries rejoin the group. + * If the member does not have groupId configured, left the group, or encountering fatal exceptions, the heartbeat will Review Comment: I find it a bit confusing to say that the member won't send HB when it left the group. Agree that it holds true when a member intentionally leaves a group (ex. when the consumer is closed), but it's not true for when a member is left out of the group by the server (ex. all fencing scenarios). When left out of a group because of a fencing situation, the member will release its assignment and send HB again to rejoin. -- 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
