Parsed test spec with 5 sessions starting permutation: s2-begin s2-create_distributed_table s3-create_distributed_table s2-commit create_distributed_table ------------------------ (1 row) step s2-begin: BEGIN; step s2-create_distributed_table: SELECT create_distributed_table('concurrent_table_2', 'id', colocate_with := 'concurrent_table_1'); create_distributed_table ------------------------ (1 row) step s3-create_distributed_table: SELECT create_distributed_table('concurrent_table_3', 'id', colocate_with := 'concurrent_table_1'); ERROR: could not acquire the lock required to colocate distributed table public.concurrent_table_1 step s2-commit: COMMIT; starting permutation: s2-begin s2-create_distributed_table s1-move-shard-logical s2-commit s3-sanity-check s3-sanity-check-2 create_distributed_table ------------------------ (1 row) step s2-begin: BEGIN; step s2-create_distributed_table: SELECT create_distributed_table('concurrent_table_2', 'id', colocate_with := 'concurrent_table_1'); create_distributed_table ------------------------ (1 row) step s1-move-shard-logical: WITH shardid AS (SELECT shardid FROM pg_dist_shard where logicalrelid = 'concurrent_table_1'::regclass ORDER BY shardid LIMIT 1) SELECT citus_move_Shard_placement(shardid.shardid, 'localhost', 57637, 'localhost', 57638) FROM shardid; ERROR: could not acquire the lock required to move public.concurrent_table_1 step s2-commit: COMMIT; step s3-sanity-check: SELECT count(*) FROM pg_dist_shard LEFT JOIN pg_dist_shard_placement USING(shardid) WHERE nodename IS NULL; count ----- 0 (1 row) step s3-sanity-check-2: SELECT count(*) FROM concurrent_table_1 JOIN concurrent_table_2 USING (id); count ----- 0 (1 row) starting permutation: s2-begin s2-create_distributed_table s1-move-shard-block s2-commit s3-sanity-check s3-sanity-check-2 create_distributed_table ------------------------ (1 row) step s2-begin: BEGIN; step s2-create_distributed_table: SELECT create_distributed_table('concurrent_table_2', 'id', colocate_with := 'concurrent_table_1'); create_distributed_table ------------------------ (1 row) step s1-move-shard-block: WITH shardid AS (SELECT shardid FROM pg_dist_shard where logicalrelid = 'concurrent_table_1'::regclass ORDER BY shardid LIMIT 1) SELECT citus_move_Shard_placement(shardid.shardid, 'localhost', 57637, 'localhost', 57638, 'block_writes') FROM shardid; ERROR: could not acquire the lock required to move public.concurrent_table_1 step s2-commit: COMMIT; step s3-sanity-check: SELECT count(*) FROM pg_dist_shard LEFT JOIN pg_dist_shard_placement USING(shardid) WHERE nodename IS NULL; count ----- 0 (1 row) step s3-sanity-check-2: SELECT count(*) FROM concurrent_table_1 JOIN concurrent_table_2 USING (id); count ----- 0 (1 row) starting permutation: s4-begin s4-move-shard-logical s5-setup-rep-factor s5-create_implicit_colocated_distributed_table s4-commit s3-sanity-check s3-sanity-check-3 s3-sanity-check-4 create_distributed_table ------------------------ (1 row) step s4-begin: BEGIN; step s4-move-shard-logical: WITH shardid AS (SELECT shardid FROM pg_dist_shard where logicalrelid = 'concurrent_table_4'::regclass ORDER BY shardid LIMIT 1) SELECT citus_move_Shard_placement(shardid.shardid, 'localhost', 57637, 'localhost', 57638) FROM shardid; citus_move_shard_placement -------------------------- (1 row) step s5-setup-rep-factor: SET citus.shard_replication_factor TO 1; step s5-create_implicit_colocated_distributed_table: SELECT create_distributed_table('concurrent_table_5', 'id'); ERROR: could not acquire the lock required to colocate distributed table public.concurrent_table_4 step s4-commit: commit; step s3-sanity-check: SELECT count(*) FROM pg_dist_shard LEFT JOIN pg_dist_shard_placement USING(shardid) WHERE nodename IS NULL; count ----- 0 (1 row) step s3-sanity-check-3: SELECT count(DISTINCT colocationid) FROM pg_dist_partition WHERE logicalrelid IN ('concurrent_table_4', 'concurrent_table_5'); count ----- 1 (1 row) step s3-sanity-check-4: SELECT count(*) FROM concurrent_table_4 JOIN concurrent_table_5 USING (id); count ----- 0 (1 row) starting permutation: s4-begin s4-move-shard-block s5-setup-rep-factor s5-create_implicit_colocated_distributed_table s4-commit s3-sanity-check s3-sanity-check-3 s3-sanity-check-4 create_distributed_table ------------------------ (1 row) step s4-begin: BEGIN; step s4-move-shard-block: WITH shardid AS (SELECT shardid FROM pg_dist_shard where logicalrelid = 'concurrent_table_4'::regclass ORDER BY shardid LIMIT 1) SELECT citus_move_Shard_placement(shardid.shardid, 'localhost', 57637, 'localhost', 57638, 'block_writes') FROM shardid; citus_move_shard_placement -------------------------- (1 row) step s5-setup-rep-factor: SET citus.shard_replication_factor TO 1; step s5-create_implicit_colocated_distributed_table: SELECT create_distributed_table('concurrent_table_5', 'id'); ERROR: could not acquire the lock required to colocate distributed table public.concurrent_table_4 step s4-commit: commit; step s3-sanity-check: SELECT count(*) FROM pg_dist_shard LEFT JOIN pg_dist_shard_placement USING(shardid) WHERE nodename IS NULL; count ----- 0 (1 row) step s3-sanity-check-3: SELECT count(DISTINCT colocationid) FROM pg_dist_partition WHERE logicalrelid IN ('concurrent_table_4', 'concurrent_table_5'); count ----- 1 (1 row) step s3-sanity-check-4: SELECT count(*) FROM concurrent_table_4 JOIN concurrent_table_5 USING (id); count ----- 0 (1 row)