tImpalaConnection Standard properties

Property type

Either Built-in or Repository.

Built-in: No property data stored centrally.

Repository: Select the repository file in which the properties are stored. The fields that follow are completed automatically using the data retrieved.

Impala Driver

Select the driver you are using from the drop-down list.

Host

Database server IP address.

Port

DB server listening port.

Database

Fill this field with the name of the database.

Additional JDBC Settings

Specify additional connection properties for the database connection you are creating.

Username and Password

Enter the database user authentication data to authenticate using LDAP.

To enter the password, click the […] button next to the password field, and then in the pop-up dialog box enter the password between double quotes and click OK to save the settings.

These parameters are not available when you select the Use kerberos authentication check box.

Use kerberos authentication

If you are accessing an Impala system running with Kerberos security, select this check box and then enter the Kerberos principal of this Impala system.

tStatCatcher Statistics

Select this check box to collect the log data at a component level.

Global Variables

ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl+Space to access the variable list and choose the variable to use from it.

For more information about variables, see Using contexts and variables.

Usage rule

This component is generally used with other Impala components, particularly tImpalaClose.