postgres_fdw_conn_leak_fujii_poc.patch

diff --git a/contrib/postgres_fdw/connection.c b/contrib/postgres_fdw/connection.c
index 66581e5414..dcd14fa4b5 100644
--- a/contrib/postgres_fdw/connection.c
+++ b/contrib/postgres_fdw/connection.c
@@ -940,12 +940,14 @@ pgfdw_xact_callback(XactEvent event, void *arg)
 		entry->xact_depth = 0;
 
 		/*
-		 * If the connection isn't in a good idle state, discard it to
-		 * recover. Next GetConnection will open a new connection.
+		 * If the connection isn't in a good idle state or it is marked as
+		 * invalid, then discard it to recover. Next GetConnection will open a
+		 * new connection.
 		 */
 		if (PQstatus(entry->conn) != CONNECTION_OK ||
 			PQtransactionStatus(entry->conn) != PQTRANS_IDLE ||
-			entry->changing_xact_state)
+			entry->changing_xact_state ||
+			entry->invalidated)
 		{
 			elog(DEBUG3, "discarding connection %p", entry->conn);
 			disconnect_pg_server(entry);
@@ -1102,7 +1104,15 @@ pgfdw_inval_callback(Datum arg, int cacheid, uint32 hashvalue)
 			 entry->server_hashvalue == hashvalue) ||
 			(cacheid == USERMAPPINGOID &&
 			 entry->mapping_hashvalue == hashvalue))
-			entry->invalidated = true;
+		{
+			if (entry->xact_depth == 0)
+			{
+				elog(DEBUG3, "discarding connection %p", entry->conn);
+				disconnect_pg_server(entry);
+			}
+			else
+				entry->invalidated = true;
+		}
 	}
 }