tCouchbaseConnection - 6.3

Talend Open Studio for Big Data Components Reference Guide

Talend Open Studio for Big Data
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tCouchbaseConnection opens a connection to a Couchbase bucket in order that a transaction may be made.


This component allows you to create a connection to a Couchbase bucket and reuse that connection in other components.

tCouchbaseConnection properties

Component family

Big Data / Couchbase


Basic settings

DB Version

List of database versions.


Data Bucket

Name of the data bucket in the Couchbase database.


Username and Password

Authentication credentials for a data bucket, instead of those for a server node.

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.



URIs of server nodes in the Couchbase cluster, in the form of "" or "http://localhost:8091/pools".

Advanced settings

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 further information about variables, see Talend Studio User Guide.


This component is generally used with other Couchbase components, especially tCouchbaseClose.


If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at