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tRiakKeyList Standard properties

These properties are used to configure tRiakKeyList running in the Standard Job framework.

The Standard tRiakKeyList component belongs to the Big Data and the Databases NoSQL families.

The component in this framework is available in all Talend products with Big Data and in Talend Data Fabric.

Basic settings

Use an existing connection	Select this check box and in the Component List drop-down list, select the desired connection component to reuse the connection details you already defined. If you select the Use an existing connection check box, the Nodes table will not be available.
Nodes	Fill in the information required for a connection to a Riak cluster. Host: enter the IP address or hostname of a Riak node in the Riak cluster that you want to connect to. Port: enter the listening port number of a Riak node. You can leave this field empty to use its default value 8098. Riak path: enter the Riak path for accessing a Riak node. You can leave this field empty to use its defalt value riak. One example of the URL for accessing a Riak node is http://127.0.0.1:8098/riak. For more information about the concepts related to Riak, see https://docs.basho.com/riak/kv/2.2.0/learn/concepts/.
Bucket	Type in the name of the bucket from which you want to retrieve all keys.

Use an existing connection

Select this check box and in the Component List drop-down list, select the desired connection component to reuse the connection details you already defined.

If you select the Use an existing connection check box, the Nodes table will not be available.

Nodes

Fill in the information required for a connection to a Riak cluster.

Host: enter the IP address or hostname of a Riak node in the Riak cluster that you want to connect to.
Port: enter the listening port number of a Riak node. You can leave this field empty to use its default value 8098.
Riak path: enter the Riak path for accessing a Riak node. You can leave this field empty to use its defalt value riak.

One example of the URL for accessing a Riak node is http://127.0.0.1:8098/riak.

For more information about the concepts related to Riak, see https://docs.basho.com/riak/kv/2.2.0/learn/concepts/.

Bucket

Type in the name of the bucket from which you want to retrieve all keys.

Advanced settings

tStatCatcher Statistics	Select this check box to gather the Job processing metadata at the Job level as well as at each component level.

Global Variables

Global Variables	CURRENT_KEY: the current key. This is a Flow variable and it returns a string. NB_LINE: the number of rows read by an input component or transferred to an output component. This is an After variable and it returns an integer. 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.

CURRENT_KEY: the current key. This is a Flow variable and it returns a string.

NB_LINE: the number of rows read by an input component or transferred to an output component. This is an After variable and it returns an integer.

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.

Usage

Usage rule	This component can be used as a standalone component.

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