I got the same error on Azure HDInsight today, finally I got the solution in: http://kitmenke.com/blog/2017/08/05/classcastexception-submitting-spark-apps-to-hdinsight/ Hope it can help. ... View more

Be careful: swap is not for flow files, it is for flow files attributes (it is not flow files content). Flow files content is written in the content repository, have a look here: https://nifi.apache.org/docs/nifi-docs/html/overview.html#nifi-architecture. Regarding swap, it depends of the implementation, but the default is to swap in the Flow File repository. ... View more

@viswanatha reddy You can check at your end for future reference [hdfs@sandbox ~]$ spark-shell --version Welcome to ____ __ / __/__ ___ _____/ /__ _\ \/ _ \/ _ `/ __/ '_/ /___/ .__/\_,_/_/ /_/\_\ version 1.4.1 /_/ Type --help for more information. [hdfs@sandbox ~]$ rpm -qa | grep spark spark_2_3_2_0_2950-python-1.4.1.2.3.2.0-2950.el6.noarch spark_2_3_2_0_2950-worker-1.4.1.2.3.2.0-2950.el6.noarch spark_2_3_2_0_2950-master-1.4.1.2.3.2.0-2950.el6.noarch spark_2_3_2_0_2950-1.4.1.2.3.2.0-2950.el6.noarch [hdfs@sandbox ~]$ ... View more