Parsed test spec with 2 sessions starting permutation: s1-begin s1-update-node-1 s2-update-node-2 s1-commit s1-show-nodes nodeid nodename nodeport 22 localhost 57637 23 localhost 57638 step s1-begin: BEGIN; step s1-update-node-1: SELECT 1 FROM master_update_node( (select nodeid from pg_dist_node where nodeport = 57637), 'localhost', 58637); ?column? 1 step s2-update-node-2: SELECT 1 FROM master_update_node( (select nodeid from pg_dist_node where nodeport = 57638), 'localhost', 58638); step s1-commit: COMMIT; step s2-update-node-2: <... completed> ?column? 1 step s1-show-nodes: SELECT nodeid, nodename, nodeport, isactive FROM pg_dist_node ORDER BY nodename, nodeport; nodeid nodename nodeport isactive 22 localhost 58637 t 23 localhost 58638 t nodeid nodename nodeport starting permutation: s1-begin s1-update-node-1 s2-begin s2-update-node-1 s1-commit s2-abort s1-show-nodes nodeid nodename nodeport 24 localhost 57637 25 localhost 57638 step s1-begin: BEGIN; step s1-update-node-1: SELECT 1 FROM master_update_node( (select nodeid from pg_dist_node where nodeport = 57637), 'localhost', 58637); ?column? 1 step s2-begin: BEGIN; step s2-update-node-1: SELECT 1 FROM master_update_node( (select nodeid from pg_dist_node where nodeport = 57637), 'localhost', 58637); step s1-commit: COMMIT; step s2-update-node-1: <... completed> ?column? 1 step s2-abort: ABORT; step s1-show-nodes: SELECT nodeid, nodename, nodeport, isactive FROM pg_dist_node ORDER BY nodename, nodeport; nodeid nodename nodeport isactive 25 localhost 57638 t 24 localhost 58637 t nodeid nodename nodeport starting permutation: s1-begin s1-update-node-1 s2-start-metadata-sync-node-2 s1-commit s2-verify-metadata nodeid nodename nodeport 26 localhost 57637 27 localhost 57638 step s1-begin: BEGIN; step s1-update-node-1: SELECT 1 FROM master_update_node( (select nodeid from pg_dist_node where nodeport = 57637), 'localhost', 58637); ?column? 1 step s2-start-metadata-sync-node-2: SELECT start_metadata_sync_to_node('localhost', 57638); step s1-commit: COMMIT; step s2-start-metadata-sync-node-2: <... completed> start_metadata_sync_to_node step s2-verify-metadata: SELECT nodeid, groupid, nodename, nodeport FROM pg_dist_node ORDER BY nodeid; SELECT master_run_on_worker( ARRAY['localhost'], ARRAY[57638], ARRAY['SELECT jsonb_agg(ROW(nodeid, groupid, nodename, nodeport) ORDER BY nodeid) FROM pg_dist_node'], false); nodeid groupid nodename nodeport 26 26 localhost 58637 27 27 localhost 57638 master_run_on_worker (localhost,57638,t,"[{""f1"": 26, ""f2"": 26, ""f3"": ""localhost"", ""f4"": 58637}, {""f1"": 27, ""f2"": 27, ""f3"": ""localhost"", ""f4"": 57638}]") nodeid nodename nodeport