The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
Effective in version 10.2.1, you can run a mapping that contains a rule specification on the Spark engine in addition to the Blaze and Hive engines.
You can also run a mapping that contains a mapplet that you generate from a rule specification on the Spark engine in addition to the Blaze and Hive engines.
For more information about rule specifications, see the