The current version of ODH manifests has upgraded Superset to 1.3.0, but there's a bug that prevents adding new datasources if sqlalchemy-clickhouse is installed, which it is.

$ pip list | grep clickhouse 
infi.clickhouse-orm 1.0.2 
sqlalchemy-clickhouse 0.1.5.post0

The datasource add API sends 500 errors w/ the following message:

AttributeError: module 'sqlalchemy_clickhouse.base' has no attribute 'name'

The fix would be to uninstall sqlalchemy clickhouse and move to using clickhouse-sqlalchemy in the base image which is supposedly more compatible w/ superset as per: https://github.com/apache/superset/issues/16492