The following steps demonstrate how to create new Impala data connections.
On the main navigation bar, click Data.
The Data view appears, open on the Datasets tab.
In the side bar, click New Connection.
The Create New Data Connection modal window appears.
ImpalaConnection
.Under Hostname or IP address, specify the name of your database host, or its IP address; use localhost
when the data source is local.
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.Under Credentials, complete the following entries.
Under Username, enter the username for establishing the connection.
Under Password, enter the password for establishing the connection.
Click the Advanced tab.
Choose Socket type.
Note: Windows platforms support only normal sockets; therefore, socket options do not appear on the modal window.
Normal [default]
SSL
SSL with certificate
If you select this option, you can Allow Common Name - Host Name Mismatch, which means that the issued SSL certificate name does not have to match the host name of the server. By default, the names must match.
Choose Authentication mode.
Note: Windows platforms support only NoSasl authentication; therefore, authentication options do not appear on the modal window.
Note: Kerberos authentication is only available on Linux platforms.
NoSasl
Plain
LDAP
Kerberos
Specify Query Timeout. The default value is 60
seconds.
Specify Session Timeout. The default value is 0
,
meaning that sessions do not time out.
Check Impersonation if using this feature to control individual table-level access for a user or a user group.
Click the Parameters tab.
Click the first row to add a Parameter name/value pair. Type in the parameters and their values.
If you want to remove a parameter, click (trash can) icon to remove existing parameters.
Click the Cache tab.
Select the Result Cache option to enable periodic cache updates.
In the Retention Time field, specify the frequency of cache updates, in seconds.
For example, the default value of 86400 indicates an update every 24 hours, and a value of 300 initiates a refresh every 5 minutes.
At the bottom of the modal, click Test.
If the connection is valid, the system returns a 'Connection Verified' message.
Click Connect.
After this operation succeeds, the new connection name appears on the side navigation bar.