Hi Siva, Does topic has partitions? which version of Spark you are using?
On Wed, Aug 10, 2016 at 2:38 AM, Sivakumaran S <siva.kuma...@me.com> wrote: > Hi, > > Here is a working example I did. > > HTH > > Regards, > > Sivakumaran S > > val topics = "test" > val brokers = "localhost:9092" > val topicsSet = topics.split(",").toSet > val sparkConf = new > SparkConf().setAppName("KafkaWeatherCalc").setMaster("local") > //spark://localhost:7077 > val sc = new SparkContext(sparkConf) > val ssc = new StreamingContext(sc, Seconds(60)) > val kafkaParams = Map[String, String]("metadata.broker.list" -> brokers) > val messages = KafkaUtils.createDirectStream[String, String, > StringDecoder, StringDecoder](ssc, kafkaParams, topicsSet) > messages.foreachRDD(rdd => { > if (rdd.isEmpty()) { > println("Failed to get data from Kafka. Please check that the Kafka > producer is streaming data.") > System.exit(-1) > } > val sqlContext = org.apache.spark.sql.SQLContext.getOrCreate(rdd. > sparkContext) > val weatherDF = sqlContext.read.json(rdd.map(_._2)).toDF() > //Process your DF as required here on > } > > > > On 09-Aug-2016, at 9:47 PM, Diwakar Dhanuskodi < > diwakar.dhanusk...@gmail.com> wrote: > > Hi, > > I am reading json messages from kafka . Topics has 2 partitions. When > running streaming job using spark-submit, I could see that * val > dataFrame = sqlContext.read.json(rdd.map(_._2)) *executes indefinitely. > Am I doing something wrong here. Below is code .This environment is > cloudera sandbox env. Same issue in hadoop production cluster mode except > that it is restricted thats why tried to reproduce issue in Cloudera > sandbox. Kafka 0.10 and Spark 1.4. > > val kafkaParams = Map[String,String]("bootstrap. > servers"->"localhost:9093,localhost:9092", "group.id" -> > "xyz","auto.offset.reset"->"smallest") > val conf = new SparkConf().setMaster("local[3]").setAppName("topic") > val ssc = new StreamingContext(conf, Seconds(1)) > > val sqlContext = new org.apache.spark.sql.SQLContext(ssc.sparkContext) > > val topics = Set("gpp.minf") > val kafkaStream = KafkaUtils.createDirectStream[String, String, > StringDecoder,StringDecoder](ssc, kafkaParams, topics) > > kafkaStream.foreachRDD( > rdd => { > if (rdd.count > 0){ > * val dataFrame = sqlContext.read.json(rdd.map(_._2)) * > dataFrame.printSchema() > //dataFrame.foreach(println) > } > } > > >