SET search_path TO upgrade_distributed_function_before, public;
-- make sure that the metadata synced
SELECT bool_and(metadatasynced) FROM pg_dist_node WHERE isactive AND noderole = 'primary';
  bool_and
---------------------------------------------------------------------
  t
 (1 row)

SET client_min_messages TO DEBUG1;
-- these are simple select functions, so doesn't have any
-- side effects, safe to be called without BEGIN;..;ROLLBACK;
SELECT count_values(11);
DEBUG:  pushing down the function call
  count_values
---------------------------------------------------------------------
             1
 (1 row)

SELECT count_values(12);
DEBUG:  pushing down the function call
  count_values
---------------------------------------------------------------------
             1
 (1 row)