mirror of https://github.com/citusdata/citus.git
137 lines
3.6 KiB
SQL
137 lines
3.6 KiB
SQL
CREATE SCHEMA local_shard_execution_dropped_column;
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SET search_path TO local_shard_execution_dropped_column;
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SET citus.next_shard_id TO 2460000;
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-- the scenario is described on https://github.com/citusdata/citus/issues/5038
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-- first stop the metadata syncing to the node do that drop column
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-- is not propogated
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SELECT stop_metadata_sync_to_node('localhost',:worker_1_port);
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SELECT stop_metadata_sync_to_node('localhost',:worker_2_port);
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-- create a distributed table, drop a column and sync the metadata
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SET citus.shard_replication_factor TO 1;
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CREATE TABLE t1 (a int, b int, c int UNIQUE);
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SELECT create_distributed_table('t1', 'c');
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ALTER TABLE t1 DROP COLUMN b;
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SELECT 1 FROM citus_activate_node('localhost',:worker_1_port);
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SELECT 1 FROM citus_activate_node('localhost',:worker_2_port);
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\c - - - :worker_1_port
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SET search_path TO local_shard_execution_dropped_column;
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-- show the dropped columns
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SELECT attrelid::regclass, attname, attnum, attisdropped
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FROM pg_attribute WHERE attrelid IN ('t1'::regclass, 't1_2460000'::regclass) and attname NOT IN ('tableoid','cmax', 'xmax', 'cmin', 'xmin', 'ctid')
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ORDER BY 1, 3, 2, 4;
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-- connect to a worker node where local execution is done
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prepare p1(int) as insert into t1(a,c) VALUES (5,$1) ON CONFLICT (c) DO NOTHING;
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SET citus.log_remote_commands TO ON;
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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prepare p2(int) as SELECT count(*) FROM t1 WHERE c = $1 GROUP BY c;
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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prepare p3(int) as INSERT INTO t1(a,c) VALUES (5, $1), (6, $1), (7, $1),(5, $1), (6, $1), (7, $1) ON CONFLICT DO NOTHING;
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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prepare p4(int) as UPDATE t1 SET a = a + 1 WHERE c = $1;
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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execute p4(8);
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\c - - - :master_port
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-- one another combination is that the shell table
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-- has a dropped column but not the shard, via rebalance operation
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SET search_path TO local_shard_execution_dropped_column;
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ALTER TABLE t1 DROP COLUMN a;
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SELECT citus_move_shard_placement(2460000, 'localhost', :worker_1_port, 'localhost', :worker_2_port, 'block_writes');
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\c - - - :worker_2_port
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SET search_path TO local_shard_execution_dropped_column;
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-- show the dropped columns
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SELECT attrelid::regclass, attname, attnum, attisdropped
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FROM pg_attribute WHERE attrelid IN ('t1'::regclass, 't1_2460000'::regclass) and attname NOT IN ('tableoid','cmax', 'xmax', 'cmin', 'xmin', 'ctid')
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ORDER BY 1, 3, 2, 4;
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prepare p1(int) as insert into t1(c) VALUES ($1) ON CONFLICT (c) DO NOTHING;
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SET citus.log_remote_commands TO ON;
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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execute p1(8);
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prepare p2(int) as SELECT count(*) FROM t1 WHERE c = $1 GROUP BY c;
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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execute p2(8);
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prepare p3(int) as INSERT INTO t1(c) VALUES ($1),($1),($1),($1),($1),($1),($1),($1),($1),($1),($1),($1),($1),($1) ON CONFLICT DO NOTHING;
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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execute p3(8);
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\c - - - :master_port
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DROP SCHEMA local_shard_execution_dropped_column CASCADE;
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