当服务器或端口详细信息错误时，kafka使用者将无限等待

Surbhi Bakshi

我用以下属性设置了卡夫卡消费者

    Properties consumerProperties = new Properties();
    consumerProperties.put("bootstrap.servers",server);
    consumerProperties.put("group.id",groupId);
    consumerProperties.put("security.protocol", "SASL_PLAINTEXT");
    consumerProperties.put("sasl.mechanism", "PLAIN");
    consumerProperties.put("enable.auto.commit", "false");
    consumerProperties.put("acks", "all");
    consumerProperties.put("request.timeout.ms", 12000);
    consumerProperties.put("max.block.ms",500);
    consumerProperties.put("session.timeout.ms", 11000);
    consumerProperties.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
    consumerProperties.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
 //Object creation from above properties
 KafkaConsumer<String, String> consumer = new KafkaConsumer<>(consumerProperties);
 // i have try catch blocks but exceptions aren't being thrown.

如果服务器详细信息不正确，它将在轮询时无限次等待-例如服务器名称错误或端口错误

            try{
                LOGGER.info("Subscribing to topic.");
                consumer.subscribe(Arrays.asList(topic));
                LOGGER.info("Subscribed to topic successfully.");
                LOGGER.info("Start of polling records for consumer. ");
                ***records = consumer.poll(100);***
         //CODE GETS STUCK IN ABOVE LINE FOR INFINITE TIME AND DOESNT COMES OUT
                LOGGER.info("Returning records to microservice.");
            }
            catch(InterruptException interruptException) {
                LOGGER.error("interrupt exception "+interruptException);
            }
            catch(TimeoutException timeoutException) {
                LOGGER.error("Time out exception "+timeoutException);
            }
            catch (KafkaException kafkaException) {
                LOGGER.error("Kafka Exception occurred while consuming records by consumer. Message: "+kafkaException.getMessage());
            }
            catch(Exception exception){
                LOGGER.error("Exception occured while creating consumer object "+exception);
            }

请建议我需要进行哪些更改，以中断对不正确服务器的无限轮询？

凯兰伯克特

正如其他人指出的那样，Kafka的内部ConsumerCoordinator当前具有内置超时9223372036854775807ms，同时试图确保协调器准备就绪。

如果您只是想在尝试轮询使用者之前确保主机/端口信息正确，则可以通过简单的调用来解决问题consumer.listTopics()。org.apache.kafka.common.errors.TimeoutException如果无法连接，它将抛出一个。

本文收集自互联网，转载请注明来源。

如有侵权，请联系 [email protected] 删除。