From 810aca8d415b48cb25ac03ae5972ee646a0d70aa Mon Sep 17 00:00:00 2001
From: Marco Slot <marco.slot@gmail.com>
Date: Wed, 4 Sep 2019 11:19:01 +0200
Subject: [PATCH] Drop foreign key from pg_dist_poolinfo to pg_dist_node

---
 src/backend/distributed/citus--8.3-1--8.4-1.sql | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/backend/distributed/citus--8.3-1--8.4-1.sql b/src/backend/distributed/citus--8.3-1--8.4-1.sql
index 633404eee..709074b4a 100644
--- a/src/backend/distributed/citus--8.3-1--8.4-1.sql
+++ b/src/backend/distributed/citus--8.3-1--8.4-1.sql
@@ -224,3 +224,10 @@ $cppu$;
 
 COMMENT ON FUNCTION pg_catalog.citus_finish_pg_upgrade()
     IS 'perform tasks to restore citus settings from a location that has been prepared before pg_upgrade';
+
+/*
+ * We truncate pg_dist_node during metadata syncing, but we do not want
+ * this to cascade to pg_dist_poolinfo, which is generally maintained
+ * by the operator.
+ */
+ALTER TABLE pg_dist_poolinfo DROP CONSTRAINT pg_dist_poolinfo_nodeid_fkey;