The validation environment indicates whether the Developer tool validates the mapping definition for the native execution environment, the Hadoop execution environment, or both. When you run a mapping in the native environment, the Data Integration Service processes the mapping.
Based on your license, you can run a mapping in the Hadoop environment. When you run a mapping in the Hadoop environment, the Data Integration Service pushes the mapping execution to the Hadoop cluster through a Hadoop connection. The Hadoop cluster processes the mapping.
When you choose the Hadoop execution environment, you can select the Blaze, Spark, or Hive engine to process the mapping.
The following image shows the validation environment:
Choose both validation environments if you want to test the mapping in the native environment before you run the mapping in the Hadoop environment. Or, choose both validation environments if you want to define the execution environment value in a parameter when you run the mapping.
If you choose both environments, you must choose the execution environment for the mapping in the run-time properties.