Question

我有一个单节点，多（3）个代理Zookeeper / Kafka设置。我正在使用Kafka 0.10 Java客户端。

我写了以下简单的远程（在与Kafka不同的服务器上）Producer（在代码中我用MYIP替换了我的公共IP地址）：

Properties config = new Properties();
try {
    config.put(ProducerConfig.CLIENT_ID_CONFIG, InetAddress.getLocalHost().getHostName());
    config.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "MYIP:9092, MYIP:9093, MYIP:9094");
    config.put(ProducerConfig.ACKS_CONFIG, "all");
    config.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
    config.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.ByteArraySerializer");
    producer = new KafkaProducer<String, byte[]>(config);
    Schema.Parser parser = new Schema.Parser();
    schema = parser.parse(GATEWAY_SCHEMA);
    recordInjection = GenericAvroCodecs.toBinary(schema);
    GenericData.Record avroRecord = new GenericData.Record(schema);
    //Filling in avroRecord (code not here)
    byte[] bytes = recordInjection.apply(avroRecord);

    Future<RecordMetadata> future = producer.send(new ProducerRecord<String, byte[]>(datasetId+"", "testKey", bytes));
    RecordMetadata data = future.get();
} catch (Exception e) {
    e.printStackTrace();
}

我的3个代理的服务器属性如下所示（在3个不同的服务器属性文件中，broker.id为0,1,2，侦听器为PLAINTEXT：//：9092，PLAINTEXT：//：9093，PLAINTEXT：/ /：9094和host.name是10.2.0.4,10.2.0.5,10.2.0.6）。这是第一个服务器属性文件：

broker.id=0
listeners=PLAINTEXT://:9092
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=/tmp/kafka1-logs
num.partitions=1
num.recovery.threads.per.data.dir=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
zookeeper.connect=localhost:2181
zookeeper.connection.timeout.ms=6000

当我执行代码时，我得到以下异常：

java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Batch containing 1 record(s) expired due to timeout while requesting metadata from brokers for 100101-0
    at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.valueOrError(FutureRecordMetadata.java:65)
    at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:52)
    at org.apache.kafka.clients.producer.internals.FutureRecordMetadata.get(FutureRecordMetadata.java:25)
    at com.nr.roles.gateway.GatewayManager.addTransaction(GatewayManager.java:212)
    at com.nr.roles.gateway.gw.service(gw.java:126)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:821)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:583)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1158)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1090)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
    at org.eclipse.jetty.server.Server.handle(Server.java:517)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
    at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
    at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
    at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
    at java.lang.Thread.run(Thread.java:745)
 Caused by: org.apache.kafka.common.errors.TimeoutException: Batch containing 1 record(s) expired due to timeout while requesting metadata from brokers for 100101-0

有谁知道我错过了什么？任何帮助，将不胜感激。非常感谢

Answer 1

我遇到了同样的问题。

您应该更改kafka server.properties以指定IP地址。例如：

PLAINTEXT://YOUIP:9093

如果没有，kafka将使用主机名，如果生产者无法获得主机，即使你可以远程登录它也无法向kafka发送消息。

Answer 2

BOOTSTRAP_SERVERS_CONFIG配置中的端口信息不正确（MYIP： 9092 ）。

正如您在server.properties中提到的那样＆＃34; PLAINTEXT：//：9093，PLAINTEXT：//：9093，PLAINTEXT：//：9094＆＃34;。

Answer 3

This回答有一些见解。您可以增加request.timeout.ms生成器配置，这将允许客户端在到期之前将批次排队更长时间。

您可能还需要查看batch.size和linger.ms配置，并找到适合您情况的最佳配置。

Kafka 0.10 Java客户端TimeoutException：包含1条记录的批处理已过期

3 个答案: