Parsed test spec with 2 sessions

starting permutation: s1-record-gpid s1-begin s2-show-locks s1-alter-dist-table s2-show-locks s1-commit s2-show-locks
create_distributed_table
---------------------------------------------------------------------

(1 row)

step s1-record-gpid:
 SELECT citus_backend_gpid() INTO selected_gpid;

step s1-begin:
 BEGIN;

step s2-show-locks:
 SELECT relation_name, citus_nodename_for_nodeid(nodeid), citus_nodeport_for_nodeid(nodeid), mode
 FROM citus_locks
 WHERE global_pid IN (SELECT * FROM selected_gpid) AND relation_name LIKE 'dist_table%'
 ORDER BY 1, 2, 3, 4;

relation_name|citus_nodename_for_nodeid|citus_nodeport_for_nodeid|mode
---------------------------------------------------------------------
(0 rows)

step s1-alter-dist-table:
 ALTER TABLE dist_table ADD COLUMN data text;

step s2-show-locks:
 SELECT relation_name, citus_nodename_for_nodeid(nodeid), citus_nodeport_for_nodeid(nodeid), mode
 FROM citus_locks
 WHERE global_pid IN (SELECT * FROM selected_gpid) AND relation_name LIKE 'dist_table%'
 ORDER BY 1, 2, 3, 4;

relation_name      |citus_nodename_for_nodeid|citus_nodeport_for_nodeid|mode
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dist_table         |localhost                |                    57636|AccessExclusiveLock
dist_table         |localhost                |                    57636|AccessShareLock
dist_table         |localhost                |                    57637|AccessExclusiveLock
dist_table         |localhost                |                    57637|AccessShareLock
dist_table         |localhost                |                    57638|AccessExclusiveLock
dist_table         |localhost                |                    57638|AccessShareLock
dist_table_12345000|localhost                |                    57637|AccessExclusiveLock
dist_table_12345000|localhost                |                    57637|AccessShareLock
dist_table_12345001|localhost                |                    57638|AccessExclusiveLock
dist_table_12345001|localhost                |                    57638|AccessShareLock
dist_table_12345002|localhost                |                    57637|AccessExclusiveLock
dist_table_12345002|localhost                |                    57637|AccessShareLock
dist_table_12345003|localhost                |                    57638|AccessExclusiveLock
dist_table_12345003|localhost                |                    57638|AccessShareLock
(14 rows)

step s1-commit:
 COMMIT;

step s2-show-locks:
 SELECT relation_name, citus_nodename_for_nodeid(nodeid), citus_nodeport_for_nodeid(nodeid), mode
 FROM citus_locks
 WHERE global_pid IN (SELECT * FROM selected_gpid) AND relation_name LIKE 'dist_table%'
 ORDER BY 1, 2, 3, 4;

relation_name|citus_nodename_for_nodeid|citus_nodeport_for_nodeid|mode
---------------------------------------------------------------------
(0 rows)

citus_remove_node
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(1 row)