The following known issues have be found in CDAP/CDF 6.3.0:
Google Bigtable Batch Source is broken
PLUGIN-610: Google Bigtable Batch Source plugin is not working in CDAP/CDF 6.3.0. All pipelines that include the Bigtable source will fail. This is a regression and will be fixed in 6.4.0 and future versions of 6.3.x.
Workaround: Before future patch versions of 6.3.0 are available, the fix can be made available on HUB based on request.