Running bigquery command via oozie

Hi,
I am trying to run bigquery python script bq.py via oozie. If I run simple command ‘python bq.py version’ via a shell script its running fine in oozie. But when I am trying to run ‘python bqpy ls -p’, in STDOUT I am getting the message ‘Heart Beat’ only. There is no error message in this and its running for long hours with the same message in STDOUT. I am submitting the oozie as root user. Files are already copied to the Hadoop’s current working directory and if I run manually python script from there, am getting the correct result. But not getting the output correctly running via oozie.
Anyone please help me to find out the reason.