test_shell_commandline.test_global_config_file fails in remote cluster test

test_shell_command_line.test_global_config_file failing to connect to impala-shell. Below is the error:
{code:java}
shell/test_shell_commandline.py:494: in test_global_config_file result = run_impala_shell_cmd(vector, args, env=env) shell/util.py:110: in run_impala_shell_cmd expect_success and wait_until_connected) shell/util.py:128: in run_impala_shell_cmd_no_expect p = ImpalaShell(vector, shell_args, env=env, wait_until_connected=wait_until_connected) shell/util.py:186: in __init__ assert connected, "Impala shell is not connected" E AssertionError: Impala shell is not connected{code}