Apache Kafka示例错误:3次尝试后无法发送消息 [英] Apache Kafka example error: Failed to send message after 3 tries

问题描述

我正在运行其网站中提到的这个kafka生产者示例

I am running this kafka producer example mentioned in its site

代码:

public class TestProducer {

    public static void main(String[] args) {
        long events = Long.parseLong(args[0]);
        Random rnd = new Random();
        Properties props = new Properties();
        props.put("metadata.broker.list", "host.broker-1:9093, host.broker-2:9093, host.broker-3:9095");
        props.put("serializer.class", "kafka.serializer.StringEncoder");
        props.put("partitioner.class", "test.app.SimplePartitioner");
        props.put("request.required.acks", "1");
        ProducerConfig config = new ProducerConfig(props);
        Producer<String, String> producer = new Producer<String, String>(config);
        for (long nEvents = 0; nEvents < events; nEvents++) { 
               long runtime = new Date().getTime();  
               String ip = "192.168.2." + rnd.nextInt(255); 
               String msg = runtime + ",www.example.com," + ip; 
               KeyedMessage<String, String> data = new KeyedMessage<String, String>("page_visits", ip, msg);
               producer.send(data);
        }
        producer.close();
    }
}

public class SimplePartitioner implements Partitioner{
    public SimplePartitioner (VerifiableProperties props) {

    }

    public int partition(Object key, int a_numPartitions) {
        int partition = 0;
        String stringKey = (String) key;
        int offset = stringKey.lastIndexOf('.');
        if (offset > 0) {
           partition = Integer.parseInt( stringKey.substring(offset+1)) % a_numPartitions;
        }
       return partition;
  }

}

更多详细信息:

我在远程主机经纪人[1-3]的主机(称为生产者)上运行此应用程序

I am running this application on a host(call is producer) which is remote to host-broker[1-3]

• 我可以从生产者主机ping和SSH代理主机.

• I can ping and ssh the broker host from producer host.

在server.properties中提供了advertised.host.name(它们在代理中分别命名为server [1-3] .properties

Provided the advertised.host.name in the server.properties (they are named as server[1-3].properties in the brokers respectively

属性:

broker.id=1
port=9093
host.name=host.broker.internal.name
advertised.host.name=host-broker1
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
log.dirs=/data/1/kafka-logs-1,/data/2/kafka-logs-2
num.partitions=1
num.recovery.threads.per.data.dir=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
log.cleaner.enable=false
zookeeper.connect=zk1:2181,zk2:2181,zk3:2181
zookeeper.connection.timeout.ms=6000

关于如何解决此错误的任何想法?

Any idea on how to fix this error?

推荐答案

运行Kafka生产者时出现以下错误:

I got these errors when running a Kafka producer:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

找到了解决方案:

在我的Mac盒子上，我在kafka_2.10-0.8.1目录中分别下载了 scala-2.10 和 kafka_2.10-0.8.1 当我启动zookeeper，kafka服务器并创建测试主题时，一切都很好.然后，我需要为测试主题启动一个生产者.但有一个错误:

On my Mac box, after I download the scala-2.10 and kafka_2.10-0.8.1, in the kafka_2.10-0.8.1 directory, every thing is fine when I start zookeeper, kafka server, and create a test topic. Then I need to start a producer for the test topic. but there is an error:

yhuangMac:kafka_2.10-0.8.1 yhuang$ ./bin/kafka-console-producer.sh –broker-list localhost:9092 –topic test
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

原因是在kafka libs目录中，kafka版本zip文件仅包含slf4j-api的jar文件，他们错过了一个jar文件:slf4j-nop.jar，因此我们必须转到

The reason is that in the kafka libs directory, the kafka release zip file only included jar file of slf4j-api, they missed a jar file: slf4j-nop.jar, so we have to go to http://www.slf4j.org, download slf4j-1.7.7.zip, and then unzip it, copy the slf4j-api-1.7.7, slf4j-nop-1.7.7.jar into kafka’s libs directory.

重新启动kafka生产者，现在没有错误报告.

Restart kafka producer again, now no error is reported.

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