How to make a dataframe for kafka streaming using

问题:

I am using kafka version 2.11-1.0.1 and Spark version 2.0.2. I have to make a dataframe for kafka response. So How Can I make dataframe for kafkaStream? Thanks In Advance

回答1:

As you said,

kvs = KafkaUtils.createStream(ssc, zkQuorum, "spark-streaming-consumer3", {topic: 1})
lines = kvs.map(lambda x: x[1])

Here, lines is a dStream of rdds and not a single a rdd in itself. Hence, to get a dataframe you have to convert it into a dStream of dataframes. Something like this,

lines.foreachRDD(lambda rdd: rdd.toDF())