The following bug has been logged on the website:
Bug reference: 15775
Logged by: Pengzhou Tang
Email address: ptang(at)pivotal(dot)io
PostgreSQL version: 11.2
Operating system: centos 7
Description:
Hi, Developers,
I hit this error when running bellow queries concurrently:
1. select pg_get_indexdef('idx_foo'::regclass);
2. drop table foo;
To repo easier, break at set_relation_column_names in session 1 and then run
session 2, error occurs.
Question:
Why pg_get_expr() doesn't acquire and hold an AccessShareLock if it needs to
access the relation later.