Establishing a Connection
Configure a Connection Profile
From the CData ribbon, click Get Data and select From Apache Impala connection/s to launch the CData Query window. To setup a new connection, you will have to click the New Apache Impala Connection button. Here you can set the connection settings, test the connection, and save the connection profile.
Connecting to Apache Impala
In order to connect to Apache Impala, set the following:
- Server: The name or network address of the SQL Server instance.
- Port: The port for the connection to the Impala Server instance.
- ProtocolVersion: The Thrift protocol version to use when connecting to the Impala server.
- Database (optional): A default database to use when one is not supplied in the SQL query. This enables using table names without having to specify database.tablename in the query.
- Pagesize (optional): The number of results to pull per page from Apache Impala when selecting data.
- QueryPassthrough (optional): Indicates if the query should be passed to Impala as-is.
- UseSSL (optional): Set this to enable TLS/SSL.
When QueryPassthrough is set to false (default), the CData ADO.NET Provider for Apache Impala will attempt to modify the query to conform to Impala required format.
Authenticating to Apache Impala
There are several ways to authenticate to Apache Impala including:
- NoSasl
- LDAP
- Kerberos
NoSasl
When using NoSasl, no authentication is performed. It is used when you are connecting to a server from a trusted location such as a test machine on your local network. By default, NoSasl is as the default AuthScheme, so no additional connection properties need to be set.
LDAP
To authenticate with LDAP, set the following connection properties:
- AuthScheme: Set this to LDAP.
- User: Set this to user to login as.
- Password: Set this to the password of the user.
Kerberos
Set the AuthScheme property to Kerberos. Please see Using Kerberos for details about how to authenticate with Kerberos.
Connection Properties
The Connection properties describe the various options that can be used to establish a connection.
Managing Connections
After successfully authenticating to Apache Impala you will be able to customize the data you are importing. To learn more about this, see Managing Connections.
See Also
- Querying Data: Use the data selection wizard to pull data into a spreadsheet. You can also configure scheduled data refresh here.
- Using the Excel Add-In: Find other ways to interact with Apache Impala data, such as using the available CData Excel Functions.