This commit seems to trigger elog(), not reproducible in the parent commit.
6e086fa2e77 Allow parallel workers to cope with a newly-created session user ID. postgres=# SET min_parallel_table_scan_size=0; CLUSTER pg_attribute USING pg_attribute_relid_attnum_index; ERROR: pg_attribute catalog is missing 26 attribute(s) for relation OID 70321 postgres=# \errverbose ERROR: XX000: pg_attribute catalog is missing 26 attribute(s) for relation OID 70321 LOCATION: RelationBuildTupleDesc, relcache.c:658 This is not completely deterministic: postgres=# CLUSTER pg_attribute USING pg_attribute_relid_attnum_index; CLUSTER postgres=# CLUSTER pg_attribute USING pg_attribute_relid_attnum_index; CLUSTER postgres=# CLUSTER pg_attribute USING pg_attribute_relid_attnum_index; CLUSTER postgres=# CLUSTER pg_attribute USING pg_attribute_relid_attnum_index; CLUSTER postgres=# CLUSTER pg_attribute USING pg_attribute_relid_attnum_index; ERROR: pg_attribute catalog is missing 26 attribute(s) for relation OID 70391 But I think this will be reproducible in any database with a nontrivial number of attributes.
