摘要：
Case classes are like regular classes with a few key differences which we will go over. Case classes are good for modeling immutable data. In the next 阅读全文
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摘要：
Case classes are like regular classes with a few key differences which we will go over. Case classes are good for modeling immutable data. In the next 阅读全文
摘要：
> ./zkCli.sh -server zk1host:port,zk2host:port,zk3host:port >help ZooKeeper -server host:port cmd args stat path [watch] set path data [version] ls pa 阅读全文
摘要：
Return: Map[TopicPartition, Long] Code: val props = new Properties() props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaPara("bootstrap.servers") 阅读全文
摘要：
Problem description: There is error messge when run spark app using spark streaming Kafka version 0.10.0.1(https://spark.apache.org/docs/latest/stream 阅读全文
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