I followed the instruction from http://python-phoenixdb.readthedocs.io/en/latest/ to connect Hbase in cloudera cluster, but I got the following error below.   I can create table using phoenix-sqlline.py localhost:2181:/hbase or even use ./psql.py to import CSV, why the python adaopter does not work? Could someone give me a simple example that allows me to connect phoenixDB in Cloudera?      >>> import phoenixdb >>> database_url = 'http://localhost:8765/' >>> conn = phoenixdb.connect(database_url, autocommit=True) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/root/anaconda2/lib/python2.7/site-packages/phoenixdb/__init__.py", line 63, in connect client.connect() File "/root/anaconda2/lib/python2.7/site-packages/phoenixdb/avatica.py", line 152, in connect raise errors.InterfaceError('Unable to connect to the specified service', e) phoenixdb.errors.InterfaceError: ('Unable to connect to the specified service', error(111, 'Connection refused'), None, None) ... View more