...
CDAP-20431: In CDAP versions 6.8.0 and 6.8.1, there's a known issue that might cause pipelines to fail when running pipelines on GCP Dataproc with the following error: Unsupported program type: Spark. The first time a pipeline that only contains actions runs on a newly created or upgraded instance, it succeeds. However, the next following pipeline runs, which include sources or sinks, might fail with this error. For updated settings, see Troubleshooting.