java.lang.RuntimeException: Not a file: hdfs: ns dp bigdata 01.xxxxx:8020 user hive warehouse demo user

Please i need help with running shark query on cassandra db. Help will be much appreciated

I do: show databases; use database;

But cant do a select statement or run other commands. Please see error from select statement below.

shark> select * from user; java.lang.RuntimeException: Not a file: hdfs://ns-dp-bigdata-01.int.dxi.eu:8020/user/hive/warehouse/demo/user at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:151) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1362) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1146) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:952) at shark.SharkCliDriver.processCmd(SharkCliDriver.scala:338) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:413) at shark.SharkCliDriver$.main(SharkCliDriver.scala:235) at shark.SharkCliDriver.main(SharkCliDriver.scala) FAILED: Execution Error, return code -101 from shark.execution.SparkTask

Thank you