Kafka生产者未来超时

Question

我正在尝试处理失败，以防生产者无法向 Kafka 发送消息：

try {
    Future<RecordMetadata> res = producer.send(new ProducerRecord<>(topic, msg.key(), msg));
    log.info("Waiting for confirmation from kafka for message : \n {}",msg.toString());
    record = res.get(30,TimeUnit.SECONDS);
    log.info("Successfully produced message : msg")
} catch (InterruptedException | ExecutionException | TimeoutException e) {
    log.error("The following message wasnt sent to kafka because of an error : {}", msg.toString(), e);
}

当我尝试向不存在的主题生成消息时，我看到以下错误：

java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Topic just_fake_topic  not present in metadata after 60000 ms.
at org.apache.kafka.clients.producer.KafkaProducer$FutureFailure.<init>(KafkaProducer.java:1307) ~[kafka-clients-2.5.0.jar!/:na]
at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:962) ~[kafka-clients-2.5.0.jar!/:na]
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:862) ~[kafka-clients-2.5.0.jar!/:na]
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:750) ~[kafka-clients-2.5.0.jar!/:na]
at com.xx.xx.produceMessage.handleMessage(produceMessage.java:27) ~[classes!/:0.0.1-SNAPSHOT]
at 
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
    Caused by: org.apache.kafka.common.errors.TimeoutException: Topic just_fake_topic not present in metadata after 60000 ms.

正如我在未来 object 的 get 方法中配置的那样，我在 60 秒后得到超时，而不是 30 秒。

我还尝试在我的 kafka.properties 中配置metadata.max.idle.ms=30000和max.block.ms=30000因为我也收到了大约 5 分钟的以下警告，但它没有帮助：

2020-06-28 14:31:26.009  WARN 10291 --- [ad | producer-1] org.apache.kafka.clients.NetworkClient   : [Producer clientId=producer-1] Error while fetching metadata with correlation id 695 : {just_fake_topic =UNKNOWN_TOPIC_OR_PARTITION}

知道为什么吗？

Answer 1

异常可能是从 Kafka 网络线程中抛出的。

https://jaceklaskowski.gitbooks.io/apache-kafka/content/kafka-producer-internals-Sender.html

也许提供一个回调作为发送的第二个参数。 注意：回调将在 kafka 网络线程上运行。

Kafka Producer：使用回调处理异步发送中的异常