The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/12/logical-replication-restrictions.html Description:
Here, we should add one more point: * Any column part of the replica identity needs to be of a type with a equality operator. Use Case: When, I have added a table for logical replication(without any primary key) which had a column with json datatype. I got below error at target(subscription) db: LOG: background worker "logical replication worker" (PID 17092) exited with exit code 1 After that, I altered the table at source db and converted the datatype to jsonb instead of json. Then, I dropped and recreated the table schema with jsonb column datatype on replica db and the error got resolved.
