kafka 生产者在代理关闭时不会抛出异常

Question

使用相同的 zookeeper 创建了一个包含两个代理的集群，并尝试向主题生成消息，其详细信息如下。

当生产者设置acks="all"或-1，min.insync.replicas="2"时，它应该会收到来自代理（领导者和副本）的确认，但是当一个代理在生产时被手动关闭时，即使在 acks="all" 时，它对 kafka 生产者没有任何影响，有人可以解释这种奇怪行为的原因吗？

经纪人在9091,9092.

acks = -1
batch.size = 16384
bootstrap.servers = [localhost:9092]
buffer.memory = 33554432
client.dns.lookup = use_all_dns_ips
client.id = producer-1
compression.type = none
connections.max.idle.ms = 540000
delivery.timeout.ms = 120000
enable.idempotence = false
interceptor.classes = []
internal.auto.downgrade.txn.commit = false
key.serializer = class org.apache.kafka.common.serialization.StringSerializer
linger.ms = 0
max.block.ms = 60000
max.in.flight.requests.per.connection = 5
max.request.size = 1048576
metadata.max.age.ms = 300000
metadata.max.idle.ms = 300000
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
partitioner.class = class org.apache.kafka.clients.producer.internals.DefaultPartitioner
receive.buffer.bytes = 32768
reconnect.backoff.max.ms = 1000
reconnect.backoff.ms = 50
request.timeout.ms = 30000
retries = 2147483647
retry.backoff.ms = 100
sasl.client.callback.handler.class = null
sasl.jaas.config = null
sasl.kerberos.kinit.cmd = /usr/bin/kinit
sasl.kerberos.min.time.before.relogin = 60000
sasl.kerberos.service.name = null
sasl.kerberos.ticket.renew.jitter = 0.05
sasl.kerberos.ticket.renew.window.factor = 0.8
sasl.login.callback.handler.class = null
sasl.login.class = null
sasl.login.refresh.buffer.seconds = 300
sasl.login.refresh.min.period.seconds = 60
sasl.login.refresh.window.factor = 0.8
sasl.login.refresh.window.jitter = 0.05
sasl.mechanism = GSSAPI
security.protocol = PLAINTEXT
security.providers = null
send.buffer.bytes = 131072
ssl.cipher.suites = null
ssl.enabled.protocols = [TLSv1.2]
ssl.endpoint.identification.algorithm = https
ssl.engine.factory.class = null
ssl.key.password = null
ssl.keymanager.algorithm = SunX509
ssl.keystore.location = null
ssl.keystore.password = null
ssl.keystore.type = JKS
ssl.protocol = TLSv1.2
ssl.provider = null
ssl.secure.random.implementation = null
ssl.trustmanager.algorithm = PKIX
ssl.truststore.location = null
ssl.truststore.password = null
ssl.truststore.type = JKS
transaction.timeout.ms = 60000
transactional.id = null
value.serializer = class org.apache.kafka.common.serialization.StringSerializer

下面是kafka producer的源码

public static  void main(String k[]) {
    Properties prop=new Properties();
    prop.setProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,"localhost:9092");
    prop.setProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
    prop.setProperty(ProducerConfig.ACKS_CONFIG,"all");
    prop.setProperty("min.insync.replicas", "2");
    prop.setProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
    KafkaProducer<String,String> producer=new KafkaProducer<>(prop);
    ProducerRecord<String,String> rec=new ProducerRecord<String,String>("clust_topic","123");
while(true) {
    producer.send(rec, new Callback() {

        @Override
        public void onCompletion(RecordMetadata rm, Exception arg1) {
            System.out.println(arg1);
            if(arg1!=null)
              System.out.println(arg1);
            else
                System.out.println(rm.topic()+" "+rm.partition()+" "+rm.offset()+" ");      
        }       
    });
  }
}

Answer 1

ack=all表示它需要来自所有in-sync副本的ack，而不是来自所有副本（参考documentation）

kafka 生产者在代理关闭时不会抛出异常

kafka producer does not throw exception when broker is down

java

apache-kafka

kafka-producer-api