Hi there,

I'm assuming the purpose of psql.py is to call it via a terminal so that it can 
be incorporated into a script.

If my assumption is correct, is there a reason we do:
subprocess.call(java_cmd, shell=True)

instead of:
subprocess.check_call (java_cmd, shell=True)

Code in question: https://github.com/apache/phoenix/blob/master/bin/psql.py#L42

Thanks,
Mark

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