Wow! What a quick reply! adding
<dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-client</artifactId> <version>2.4.0</version> </dependency> solved the problem. But now I get 14/06/03 19:52:50 ERROR Shell: Failed to locate the winutils binary in the hadoop binary path java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries. at org.apache.hadoop.util.Shell.getQualifiedBinPath(Shell.java:318) at org.apache.hadoop.util.Shell.getWinUtilsPath(Shell.java:333) at org.apache.hadoop.util.Shell.<clinit>(Shell.java:326) at org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:76) at org.apache.hadoop.security.Groups.parseStaticMapping(Groups.java:93) at org.apache.hadoop.security.Groups.<init>(Groups.java:77) at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:240) at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:255) at org.apache.hadoop.security.UserGroupInformation.setConfiguration(UserGroupInformation.java:283) at org.apache.spark.deploy.SparkHadoopUtil.<init>(SparkHadoopUtil.scala:36) at org.apache.spark.deploy.SparkHadoopUtil$.<init>(SparkHadoopUtil.scala:109) at org.apache.spark.deploy.SparkHadoopUtil$.<clinit>(SparkHadoopUtil.scala) thanks toivo -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/wholeTextFiles-java-lang-IncompatibleClassChangeError-Found-class-org-apache-hadoop-mapreduce-TaskAtd-tp6818p6820.html Sent from the Apache Spark User List mailing list archive at Nabble.com.