Configuring Impyla for authentication

You can connect Impyla to the Impala Virtual Warehouse using the HTTP transport protocol and JWT as the authentication mechanism.

Ensure you have Impyla configured for Impala. See, Configuring Impyla for Impala.

In a terminal window, as a client, you run the command provided by the Impala Virtual Warehouse owner to update Impyla to the version compatible with the Impala Virtual Warehouse.
```
 pip install impyla==0.18.0 
```
Connect Impyla to the Impala Virtual Warehouse using a connection string as described below:
- host=Name of your Virtual Warehouse host
- port=Virtual Warehouse port
- use ssl=true
  Cloudera Data Warehouse only provides a TLS endpoint, it does not provide an unencrypted endpoint. Also, not using TLS will expose the JWT in plain text.
- http_transport=True
  The http transport is required by Impala for JWT authentication.
- jwt=<JWT token>
  Substitute your JWT token, which you copied earlier, for <JWT Token>.
- http_path="cliservice"
  Required.
```
self.connection = connect(<ENV>.host, <ENV>.http_port, use_http_transport=True,
http_path="cliservice", 
auth_mechanism="JWT",
timeout=5, jwt=<JWT Token>)
```
On the client side, you can now run queries from Impyla on the Impala Virtual Warehouse.