Client Throws "DBException(message:User matching query does not exist. Lookup parameters were {'username': None})"

[qqliu]

The following piece of code throws the above error:

this.transport = new THttpClient("http://datahub.csail.mit.edu/service");
this.protocol = new  TBinaryProtocol(transport);
this.client = new DataHub.Client(protocol);

this.con_params = new ConnectionParams();
this.con_params.setUser("anantb");
this.con_params.setPassword("anant");
this.conn = this.client.open_connection(con_params);

ResultSet updatelogExists =  this.client.execute_sql(this.conn, "select * from anantb.test.demo", null);

Gives the following error:

DBException(message:User matching query does not exist. Lookup parameters were {'username': None})...

Would appreciate a fix for this! Thanks!

[qqliu]

Ah, the API has changed.