Shark: class java.io.IOException: Cannot run program /bin/java

Hi, after starting the shark-shell via /opt/shark/shark-0.9.1/bin/shark-withinfo -skipRddReload I receive lots of output, including the exception that /bin/java cannot be executed. But it is linked to /usr/bin/java ?!?! root#ls -al /bin/java lrwxrwxrwx 1 root root 13 15. Apr 21:45 /bin/java

cannot exec. job: TaskSchedulerImpl: Initial job has not accepted any resources

Hi, I'm starting using Spark and have installed Spark within CDH5 using ClouderaManager. I set up one master (hadoop-pg-5) and 3 workers (hadoop-pg-7[-8,-9]). Master WebUI looks good, all workers seem to be registered. If I open spark-shell and try to execute the wordcount example, the execution