How to define connection settings - 6.1

Talend Data Fabric Studio User Guide

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You can display the properties of a connection by selecting it and clicking the Component view tab, or by right-clicking the connection and selecting Settings from the contextual menu. This section summarizes connection property settings.

Row connection settings

The Basic settings vertical tab of the Component view of the connection displays the schema of the data flow handled by the connection. You can change the schema by clicking the Edit schema button. For more information, see How to set a built-in schema.

The Advanced settings vertical tab lets you monitor the data flow over the connection in a Job without using a separate tFlowMeter component. The measured information will be interpreted and displayed in a monitoring tool such Talend Activity Monitoring Console (available with Talend subscription-based products). For information about Talend Activity Monitoring Console, see Talend Activity Monitoring Console User Guide.

To monitor the data over the connection, perform the following settings in the Advanced settings vertical tab:

  1. Select the Monitor this connection check box.

  2. From the Mode list, select Absolute to log the actual number of rows passes over the connection, or Relative to log the ratio (%) of the number of rows passed over this connection against a reference connection. If you select Relative, you need to select a reference connection from the Connections List list.

  3. Click the plus button to add a line in the Thresholds table and define a range of the number of rows to be logged.

For more information about flow metrics, see the documentation of the tFlowMeterCatcher component in Talend Components Reference Guide and see Talend Activity Monitoring Console User Guide.

Iterate connection settings

When you configure an Iterate connection, you are actually enabling parallel iterations. For further information, see How to launch parallel iterations to read data.

Trigger connection settings

OnSubjobOK/OnSubjobError connection settings

When working in a remote project, you can define checkpoints on OnSubjobOK and OnSubjobError trigger connections, so that the execution of your Job can be recovered, in case of Job execution failure, from the last checkpoint previous to the error through the Error Recovery Management page in Talend Administration Center.

To define a checkpoint on a subjob trigger connection, perform the following settings in the Error recovery vertical tab of the connection's Component view:

  1. Select the Recovery Checkpoint check box.

  2. Enter a name for the checkpoint in the Label field.

  3. Fill in any text that can explain the failure in the Failure instructions text field.

For more information, see How to set checkpoints on trigger connections.

Related topic: Recovering Job execution in Talend Administration Center User Guide.

Run if connection settings

In the Basic settings view of a Run if connection, you can set the condition to the Subjob in Java. Pressing Ctrl+Space allows you to access all global and context variables.