You can validate and run mappings in the native environment or Hive environment.
You can validate a mapping in the native environment, Hive environment, or both. The Data Integration Service validates whether the mapping can run in the selected environment. You must validate the mapping for an environment before you run the mapping in that environment.
When you run a mapping in the native environment, the Data Integration Service runs the mapping from the Developer tool.
When you run a mapping in a Hive environment, the Data Integration Service converts the task into HiveQL queries to enable the Hadoop cluster to process the data.