TestClientSsl.test_tls_v12 failing due to Python SSL error

custom_cluster/test_client_ssl.py:128: in test_tls_v12
    self._validate_positive_cases("%s/server-cert.pem" % self.CERT_DIR)
custom_cluster/test_client_ssl.py:181: in _validate_positive_cases
    result = run_impala_shell_cmd(shell_options)
shell/util.py:97: in run_impala_shell_cmd
    result.stderr)
E   AssertionError: Cmd --ssl -q 'select 1 + 2' was expected to succeed: Starting Impala Shell without Kerberos authentication
E   SSL is enabled. Impala server certificates will NOT be verified (set --ca_cert to change)
E   /data/jenkins/workspace/impala-cdh6.x-exhaustive-rhel7/Impala-Toolchain/thrift-0.9.3-p4/python/lib64/python2.7/site-packages/thrift/transport/TSSLSocket.py:80: DeprecationWarning: 3th positional argument is deprecated. Use keyward argument insteand.
E     DeprecationWarning)
E   /data/jenkins/workspace/impala-cdh6.x-exhaustive-rhel7/Impala-Toolchain/thrift-0.9.3-p4/python/lib64/python2.7/site-packages/thrift/transport/TSSLSocket.py:80: DeprecationWarning: 4th positional argument is deprecated. Use keyward argument insteand.
E     DeprecationWarning)
E   /data/jenkins/workspace/impala-cdh6.x-exhaustive-rhel7/Impala-Toolchain/thrift-0.9.3-p4/python/lib64/python2.7/site-packages/thrift/transport/TSSLSocket.py:80: DeprecationWarning: 5th positional argument is deprecated. Use keyward argument insteand.
E     DeprecationWarning)
E   /data/jenkins/workspace/impala-cdh6.x-exhaustive-rhel7/Impala-Toolchain/thrift-0.9.3-p4/python/lib64/python2.7/site-packages/thrift/transport/TSSLSocket.py:216: DeprecationWarning: validate is deprecated. Use cert_reqs=ssl.CERT_NONE instead
E     DeprecationWarning)
E   No handlers could be found for logger "thrift.transport.TSSLSocket"
E   Error connecting: TTransportException, Could not connect to localhost:21000: [Errno 8] _ssl.c:504: EOF occurred in violation of protocol
E   Not connected to Impala, could not execute queries.