摘要:
Apache Kafka is publish-subscribe messaging rethought as a distributed, partitioned, replicated commit log service. Here we explain how to configure S 阅读全文
摘要:
Output OperationMeaning print() Prints the first ten elements of every batch of data in a DStream on the driver node running the streaming application 阅读全文
摘要:
A more efficient version of the above reduceByKeyAndWindow() where the reduce value of each window is calculated incrementally using the reduce values 阅读全文
摘要:
TransformationMeaning map(func) Return a new DStream by passing each element of the source DStream through a function func. flatMap(func) Similar to m 阅读全文