我正在使用Kafka(版本0.11.0.2)服务器API在localhost中启动Kafka代理。因为它运行没有任何问题。生产者还可以发送消息成功。
但消费者无法获取信息
控制台中没有错误日志。所以我调试了代码并循环
“刷新元数据”
.
这是源代码
while (coordinatorUnknown()) {
RequestFuture<Void> future = lookupCoordinator();
client.poll(future, remainingMs);
if (future.failed()) {
if (future.isRetriable()) {
remainingMs = timeoutMs - (time.milliseconds() - startTimeMs);
if (remainingMs <= 0)
break;
log.debug("Coordinator discovery failed for group {}, refreshing metadata", groupId);
client.awaitMetadataUpdate(remainingMs);
} else
throw future.exception();
} else if (coordinator != null && client.connectionFailed(coordinator)) {
// we found the coordinator, but the connection has failed, so mark
// it dead and backoff before retrying discovery
coordinatorDead();
time.sleep(retryBackoffMs);
}
remainingMs = timeoutMs - (time.milliseconds() - startTimeMs);
if (remainingMs <= 0)
break;
}
添加:我将卡夫卡版本更改为
0.10.x个
运行正常。
这是我的卡夫卡服务器代码。
private static void startKafkaLocal() throws Exception {
final File kafkaTmpLogsDir = File.createTempFile("zk_kafka", "2");
if (kafkaTmpLogsDir.delete() && kafkaTmpLogsDir.mkdir()) {
Properties props = new Properties();
props.setProperty("host.name", KafkaProperties.HOSTNAME);
props.setProperty("port", String.valueOf(KafkaProperties.KAFKA_SERVER_PORT));
props.setProperty("broker.id", String.valueOf(KafkaProperties.BROKER_ID));
props.setProperty("zookeeper.connect", KafkaProperties.ZOOKEEPER_CONNECT);
props.setProperty("log.dirs", kafkaTmpLogsDir.getAbsolutePath());
//advertised.listeners=PLAINTEXT://xxx.xx.xx.xx:por
// flush every message.
// flush every 1ms
props.setProperty("log.default.flush.scheduler.interval.ms", "1");
props.setProperty("log.flush.interval", "1");
props.setProperty("log.flush.interval.messages", "1");
props.setProperty("replica.socket.timeout.ms", "1500");
props.setProperty("auto.create.topics.enable", "true");
props.setProperty("num.partitions", "1");
KafkaConfig kafkaConfig = new KafkaConfig(props);
KafkaServerStartable kafka = new KafkaServerStartable(kafkaConfig);
kafka.startup();
System.out.println("start kafka ok "+kafka.serverConfig().numPartitions());
}
}
谢谢
