Cannot create citus table if column defaults to a user created sequence in MX

[onurctirtir]

If we have a table which has a column defaulting to a sequence created by CREATE SEQUENCE command, we get the following as we don't propagate sequences to worker nodes by default.

Along with the problem defined by the title of the issue, same problem also occurs when we try to sync metadata to a worker node after creating such a citus table. An example with reference tables:

CREATE SEQUENCE sequence;
CREATE TABLE reference_table (a int default nextval('sequence'));
SELECT create_reference_table('reference_table');
SELECT start_metadata_sync_to_node('localhost', 9701);
ERROR:  relation "public.sequence" does not exist
CONTEXT:  while executing command on localhost:9701