apache-kafka - Apache Kafka 示例错误 : Failed to send message after 3 tries

Question

我正在运行其网站中提到的这个 kafka 生产者示例

编码:

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;
  }

}

更多细节:

我在主机(调用是生产者)上运行这个应用程序，它是远程主机代理[1-3]

我可以从生产者主机 ping 和 ssh 代理主机。

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

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？

Answer 1

我在运行 Kafka 生产者时遇到这些错误:

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.

找到解决办法:

在我的 Mac 盒子上，下载 scala-2.10 后和 kafka_2.10-0.8.1 ,在kafka_2.10-0.8.1目录下，启动zookeeper，kafka server，创建test topic，一切正常。然后我需要为测试主题启动一个生产者。但有一个错误:

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kafka libs目录下，kafka release zip文件只包含slf4j-api的jar文件，漏掉了一个jar文件:slf4j-nop.jar，所以我们要去 http://www.slf4j.org , 下载 slf4j-1.7.7.zip ，然后解压，将slf4j-api-1.7.7、slf4j-nop-1.7.7.jar复制到kafka的libs目录下。

再次重启kafka producer，现在没有报错了。

来源: SOLUTION