search_path in pg_dump output.

[NEERAJ BANSAL]

Hi,

we are using pg_dump output to compare the schema consistency. But after 
upgrade to postgres 11.5 we are seeing different behavior of pg_dump 
intermittently.  As per the 
https://github.com/postgres/postgres/commit/582edc369cdbd348d68441fc50fa26a84afd0c1a
 pg_dump should reset the schema path to empty and generate fully qualified 
table names which is not happening in intermittent case.  Same can be seen on 
multiple different servers and many users are impacted due to this. Please help 
me to understand this behavior difference. Also, If possible please let me know 
if it is bug or some configuration issue.


we have default search_path value in postgresql.conf file.
issue appear 1/5
Command used to dump schema:
pg_dump.exe --file=D:\ schmdmp_tmp --no-owner --no-tablespaces 
--schema=hpdpidb_app --schema-only --password --username=xyz --port=xxxx 
--host=localhost db_xyz

In normal cases:
-- Dumped from database version 11.5
-- Dumped by pg_dump version 11.5

SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);

CREATE VIEW hpdpidb_app.dp_cartridges AS
SELECT crt.uuid
   FROM hpdpidb_app.dp_medmng_cartridge crt;

Intermittently:
-- Dumped from database version 11.5
-- Dumped by pg_dump version 11.5

SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', 'hpdpidb_app', false);

CREATE VIEW hpdpidb_app.dp_cartridges AS
SELECT crt.uuid
   FROM dp_medmng_cartridge crt;

Thanks,
Neeraj