"errorType": "TTransportException",
"errorMessage": "Could not connect to xx.xx.xx.xx:21050"

hdfs = ibis.hdfs_connect(host=db_cfg["hdfs_host"], port=db_cfg["hdfs_port"], user=db_cfg["hdfs_user"])
        client = ibis.impala.connect(host=db_cfg["impala_host"], port=db_cfg["impala_port"], hdfs_client=hdfs)