问题1.
IDEA 中Kafa_Producer程序数据输出缓慢 但不报错
问题2.
Kafa_Consumer程序报错：
17/11/10 11:31:11 ERROR ReceiverTracker: Deregistered receiver for stream 0: Error starting receiver 0 - org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server 'localhost:2181' with timeout of 10000 ms
at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:1233)
at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:157)
at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:131)
at kafka.utils.ZkUtils$.createZkClientAndConnection(ZkUtils.scala:103)
at kafka.utils.ZkUtils$.apply(ZkUtils.scala:85)
at kafka.consumer.ZookeeperConsumerConnector.connectZk(ZookeeperConsumerConnector.scala:194)
at kafka.consumer.ZookeeperConsumerConnector.<init>(ZookeeperConsumerConnector.scala:142)
at kafka.consumer.ZookeeperConsumerConnector.<init>(ZookeeperConsumerConnector.scala:159)
at kafka.consumer.Consumer$.create(ConsumerConnector.scala:112)
at org.apache.spark.streaming.kafka.KafkaReceiver.onStart(KafkaInputDStream.scala:100)
at org.apache.spark.streaming.receiver.ReceiverSupervisor.startReceiver(ReceiverSupervisor.scala:149)
at org.apache.spark.streaming.receiver.ReceiverSupervisor.start(ReceiverSupervisor.scala:131)
at org.apache.spark.streaming.scheduler.ReceiverTracker$ReceiverTrackerEndpoint$$anonfun$9.apply(ReceiverTracker.scala:607)
at org.apache.spark.streaming.scheduler.ReceiverTracker$ReceiverTrackerEndpoint$$anonfun$9.apply(ReceiverTracker.scala:597)
at org.apache.spark.SparkContext$$anonfun$34.apply(SparkContext.scala:2173)
at org.apache.spark.SparkContext$$anonfun$34.apply(SparkContext.scala:2173)
at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)
at org.apache.spark.scheduler.Task.run(Task.scala:108)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:335)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
解决：
1.需要启动Zookeeper服务:./bin/zookeeper-server-start.sh config/zookeeper.properties
2.启动Kafka服务：./bin/kafka-server-start.sh config/server.properties