Currently, the documentation explicitly states, that after failover, the
old master must be recreated from scratch, or pg_rewind should be used
(requiring wal_log_hints to be on, which is off by default):
> The former standby is now the primary, but the former primary is down and
might stay down.
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/11/static/ddl-partitioning.html
Description:
"If you want to use COPY to insert data, you'll need to copy into the
correct child table rather than directly into the master."
What the reasons
