You can run the Merge rows (diff) step on the Pentaho engine or on the Spark engine. Depending on your selected engine, the transformation runs differently. Select one of the following options to view how to set up the Merge rows (diff) step for your selected engine.
- Using Merge rows (diff) on the Pentaho engine: Learn how to set up this step when using the Pentaho engine.
- Using Merge rows (diff) on the Spark engine: Learn how to set up this step when using the Spark engine.
For instructions on selecting an engine from your transformation, see Run configurations.