mirror of https://github.com/citusdata/citus.git
475 lines
17 KiB
PL/PgSQL
475 lines
17 KiB
PL/PgSQL
-- Test queries on a distributed table with shards on the coordinator
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CREATE SCHEMA coordinator_shouldhaveshards;
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SET search_path TO coordinator_shouldhaveshards;
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SET citus.next_shard_id TO 1503000;
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SET citus.next_placement_id TO 1503000;
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-- idempotently add node to allow this test to run without add_coordinator
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SET client_min_messages TO WARNING;
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SELECT 1 FROM master_add_node('localhost', :master_port, groupid => 0);
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RESET client_min_messages;
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SELECT 1 FROM master_set_node_property('localhost', :master_port, 'shouldhaveshards', true);
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SET citus.shard_replication_factor TO 1;
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CREATE TABLE test (x int, y int);
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SELECT create_distributed_table('test','x', colocate_with := 'none');
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SELECT count(*) FROM pg_dist_shard JOIN pg_dist_placement USING (shardid)
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WHERE logicalrelid = 'test'::regclass AND groupid = 0;
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--- enable logging to see which tasks are executed locally
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SET client_min_messages TO LOG;
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SET citus.log_local_commands TO ON;
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-- INSERT..SELECT with COPY under the covers
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INSERT INTO test SELECT s,s FROM generate_series(2,100) s;
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-- router queries execute locally
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INSERT INTO test VALUES (1, 1);
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SELECT y FROM test WHERE x = 1;
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-- multi-shard queries connect to localhost
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SELECT count(*) FROM test;
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WITH a AS (SELECT * FROM test) SELECT count(*) FROM test;
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-- multi-shard queries in transaction blocks execute locally
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BEGIN;
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SELECT y FROM test WHERE x = 1;
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SELECT count(*) FROM test;
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END;
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BEGIN;
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SELECT y FROM test WHERE x = 1;
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SELECT count(*) FROM test;
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END;
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-- INSERT..SELECT with re-partitioning after local execution
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BEGIN;
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INSERT INTO test VALUES (0,1000);
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CREATE TABLE repart_test (x int primary key, y int);
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SELECT create_distributed_table('repart_test','x', colocate_with := 'none');
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INSERT INTO repart_test (x, y) SELECT y, x FROM test;
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SELECT y FROM repart_test WHERE x = 1000;
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INSERT INTO repart_test (x, y) SELECT y, x FROM test ON CONFLICT (x) DO UPDATE SET y = -1;
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SELECT y FROM repart_test WHERE x = 1000;
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ROLLBACK;
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-- INSERT..SELECT with re-partitioning in EXPLAIN ANALYZE after local execution
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BEGIN;
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INSERT INTO test VALUES (0,1000);
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EXPLAIN (COSTS FALSE, ANALYZE TRUE, TIMING FALSE, SUMMARY FALSE) INSERT INTO test (x, y) SELECT y, x FROM test;
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ROLLBACK;
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-- DDL connects to locahost
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ALTER TABLE test ADD COLUMN z int;
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-- DDL after local execution
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BEGIN;
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SELECT y FROM test WHERE x = 1;
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ALTER TABLE test DROP COLUMN z;
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ROLLBACK;
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BEGIN;
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ALTER TABLE test DROP COLUMN z;
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SELECT y FROM test WHERE x = 1;
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END;
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SET citus.shard_count TO 6;
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SET citus.log_remote_commands TO OFF;
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BEGIN;
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SET citus.log_local_commands TO ON;
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CREATE TABLE dist_table (a int);
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INSERT INTO dist_table SELECT * FROM generate_series(1, 100);
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-- trigger local execution
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SELECT y FROM test WHERE x = 1;
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-- this should be run locally
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SELECT create_distributed_table('dist_table', 'a', colocate_with := 'none');
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SELECT count(*) FROM dist_table;
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ROLLBACK;
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CREATE TABLE dist_table (a int);
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INSERT INTO dist_table SELECT * FROM generate_series(1, 100);
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BEGIN;
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SET citus.log_local_commands TO ON;
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-- trigger local execution
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SELECT y FROM test WHERE x = 1;
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-- this should be run locally
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SELECT create_distributed_table('dist_table', 'a', colocate_with := 'none');
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SELECT count(*) FROM dist_table;
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ROLLBACK;
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-- repartition queries should work fine
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SET citus.enable_repartition_joins TO ON;
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SELECT count(*) FROM test t1, test t2 WHERE t1.x = t2.y;
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BEGIN;
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SET citus.enable_repartition_joins TO ON;
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SELECT count(*) FROM test t1, test t2 WHERE t1.x = t2.y;
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END;
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BEGIN;
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SET citus.enable_repartition_joins TO ON;
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-- trigger local execution
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SELECT y FROM test WHERE x = 1;
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SELECT count(*) FROM test t1, test t2 WHERE t1.x = t2.y;
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ROLLBACK;
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CREATE TABLE ref (a int, b int);
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SELECT create_reference_table('ref');
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CREATE TABLE local (x int, y int);
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BEGIN;
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SELECT count(*) FROM test;
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SELECT * FROM ref JOIN local ON (a = x);
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TRUNCATE ref;
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ROLLBACK;
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BEGIN;
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SELECT count(*) FROM test;
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TRUNCATE ref;
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SELECT * FROM ref JOIN local ON (a = x);
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ROLLBACK;
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BEGIN;
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SELECT count(*) FROM test;
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INSERT INTO ref VALUES (1,2);
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INSERT INTO local VALUES (1,2);
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SELECT * FROM ref JOIN local ON (a = x);
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ROLLBACK;
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BEGIN;
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SELECT count(*) FROM test;
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-- we wont see the modifying cte in this query because we will use local execution and
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-- in postgres we wouldn't see this modifying cte, so it is consistent with postgres.
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WITH a AS (SELECT count(*) FROM test), b AS (INSERT INTO local VALUES (3,2) RETURNING *), c AS (INSERT INTO ref VALUES (3,2) RETURNING *), d AS (SELECT count(*) FROM ref JOIN local ON (a = x)) SELECT * FROM a, b, c, d ORDER BY x,y,a,b;
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TRUNCATE ref;
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SELECT * FROM ref JOIN local ON (a = x);
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-- we wont see the modifying cte in this query because we will use local execution and
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-- in postgres we wouldn't see this modifying cte, so it is consistent with postgres.
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WITH a AS (SELECT count(*) FROM test), b AS (INSERT INTO local VALUES (3,2) RETURNING *), c AS (INSERT INTO ref VALUES (3,2) RETURNING *), d AS (SELECT count(*) FROM ref JOIN local ON (a = x)) SELECT * FROM a, b, c, d ORDER BY x,y,a,b;
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ROLLBACK;
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BEGIN;
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-- we wont see the modifying cte in this query because we will use local execution and
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-- in postgres we wouldn't see this modifying cte, so it is consistent with postgres.
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WITH a AS (SELECT count(*) FROM test), b AS (INSERT INTO local VALUES (3,2) RETURNING *), c AS (INSERT INTO ref VALUES (3,2) RETURNING *), d AS (SELECT count(*) FROM ref JOIN local ON (a = x)) SELECT * FROM a, b, c, d ORDER BY x,y,a,b;
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ROLLBACK;
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BEGIN;
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-- we wont see the modifying cte in this query because we will use local execution and
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-- in postgres we wouldn't see this modifying cte, so it is consistent with postgres.
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WITH a AS (SELECT count(*) FROM test), b AS (INSERT INTO local VALUES (3,2) RETURNING *), c AS (INSERT INTO ref SELECT *,* FROM generate_series(1,10) RETURNING *), d AS (SELECT count(*) FROM ref JOIN local ON (a = x)) SELECT * FROM a, b, c, d ORDER BY x,y,a,b;
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ROLLBACK;
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-- same local table reference table tests, but outside a transaction block
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INSERT INTO ref VALUES (1,2);
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INSERT INTO local VALUES (1,2);
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SELECT * FROM ref JOIN local ON (a = x);
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-- we wont see the modifying cte in this query because we will use local execution and
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-- in postgres we wouldn't see this modifying cte, so it is consistent with postgres.
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WITH a AS (SELECT count(*) FROM test), b AS (INSERT INTO local VALUES (3,2) RETURNING *), c AS (INSERT INTO ref VALUES (3,2) RETURNING *), d AS (SELECT count(*) FROM ref JOIN local ON (a = x)) SELECT * FROM a, b, c, d ORDER BY x,y,a,b;
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-- joins between local tables and distributed tables are disallowed
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CREATE TABLE dist_table(a int);
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SELECT create_distributed_table('dist_table', 'a');
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INSERT INTO dist_table VALUES(1);
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SELECT * FROM local JOIN dist_table ON (a = x) ORDER BY 1,2,3;
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SELECT * FROM local JOIN dist_table ON (a = x) WHERE a = 1 ORDER BY 1,2,3;
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-- intermediate results are allowed
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WITH cte_1 AS (SELECT * FROM dist_table ORDER BY 1 LIMIT 1)
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SELECT * FROM ref JOIN local ON (a = x) JOIN cte_1 ON (local.x = cte_1.a);
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-- full router query with CTE and local
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WITH cte_1 AS (SELECT * FROM ref LIMIT 1)
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SELECT * FROM ref JOIN local ON (a = x) JOIN cte_1 ON (local.x = cte_1.a);
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DROP TABLE dist_table;
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-- issue #3801
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SET citus.shard_replication_factor TO 2;
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CREATE TABLE dist_table(a int);
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SELECT create_distributed_table('dist_table', 'a');
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BEGIN;
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-- this will use perPlacementQueryStrings, make sure it works correctly with
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-- copying task
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INSERT INTO dist_table SELECT a + 1 FROM dist_table;
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ROLLBACK;
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SET citus.shard_replication_factor TO 1;
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BEGIN;
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SET citus.shard_replication_factor TO 2;
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CREATE TABLE dist_table1(a int);
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-- this will use queryStringList, make sure it works correctly with
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-- copying task
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SELECT create_distributed_table('dist_table1', 'a');
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ROLLBACK;
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CREATE table ref_table(x int PRIMARY KEY, y int);
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-- this will be replicated to the coordinator because of add_coordinator test
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SELECT create_reference_table('ref_table');
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TRUNCATE TABLE test;
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BEGIN;
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INSERT INTO test SELECT *, * FROM generate_series(1, 100);
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INSERT INTO ref_table SELECT *, * FROM generate_series(1, 100);
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SELECT COUNT(*) FROM test JOIN ref_table USING(x);
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ROLLBACK;
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-- writing to local file and remote intermediate files
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-- at the same time
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INSERT INTO ref_table SELECT *, * FROM generate_series(1, 100);
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WITH cte_1 AS (
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INSERT INTO ref_table SELECT * FROM ref_table LIMIT 10000 ON CONFLICT (x) DO UPDATE SET y = EXCLUDED.y + 1 RETURNING *)
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SELECT count(*) FROM cte_1;
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-- issue #4237: preventing empty placement creation on coordinator
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CREATE TABLE test_append_table(a int);
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SELECT create_distributed_table('test_append_table', 'a', 'append');
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-- this will fail since it will try to create an empty placement in the
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-- coordinator as well
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SET citus.shard_replication_factor TO 3;
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SELECT master_create_empty_shard('test_append_table');
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-- this will create an empty shard with replicas in the two worker nodes
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SET citus.shard_replication_factor TO 2;
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SELECT 1 FROM master_create_empty_shard('test_append_table');
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-- verify groupid is not 0 for each placement
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SELECT COUNT(*) FROM pg_dist_placement p, pg_dist_shard s WHERE p.shardid = s.shardid AND s.logicalrelid = 'test_append_table'::regclass AND p.groupid > 0;
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SET citus.shard_replication_factor TO 1;
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-- test partitioned index creation with long name
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CREATE TABLE test_index_creation1
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(
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tenant_id integer NOT NULL,
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timeperiod timestamp without time zone NOT NULL,
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field1 integer NOT NULL,
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inserted_utc timestamp without time zone NOT NULL DEFAULT now(),
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PRIMARY KEY(tenant_id, timeperiod)
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) PARTITION BY RANGE (timeperiod);
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CREATE TABLE test_index_creation1_p2020_09_26
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PARTITION OF test_index_creation1 FOR VALUES FROM ('2020-09-26 00:00:00') TO ('2020-09-27 00:00:00');
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CREATE TABLE test_index_creation1_p2020_09_27
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PARTITION OF test_index_creation1 FOR VALUES FROM ('2020-09-27 00:00:00') TO ('2020-09-28 00:00:00');
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select create_distributed_table('test_index_creation1', 'tenant_id');
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-- should be able to create indexes with INCLUDE/WHERE
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CREATE INDEX ix_test_index_creation5 ON test_index_creation1
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USING btree(tenant_id, timeperiod)
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INCLUDE (field1) WHERE (tenant_id = 100);
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-- test if indexes are created
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SELECT 1 AS created WHERE EXISTS(SELECT * FROM pg_indexes WHERE indexname LIKE '%test_index_creation%');
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-- test alter_distributed_table UDF
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SET citus.shard_count TO 4;
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CREATE TABLE adt_table (a INT, b INT);
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CREATE TABLE adt_col (a INT UNIQUE, b INT);
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CREATE TABLE adt_ref (a INT REFERENCES adt_col(a));
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SELECT create_distributed_table('adt_table', 'a', colocate_with:='none');
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SELECT create_distributed_table('adt_col', 'a', colocate_with:='adt_table');
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SELECT create_distributed_table('adt_ref', 'a', colocate_with:='adt_table');
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INSERT INTO adt_table VALUES (1, 2), (3, 4), (5, 6);
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INSERT INTO adt_col VALUES (3, 4), (5, 6), (7, 8);
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INSERT INTO adt_ref VALUES (3), (5);
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SELECT table_name, citus_table_type, distribution_column, shard_count FROM public.citus_tables WHERE table_name::text LIKE 'adt%';
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SELECT STRING_AGG(table_name::text, ', ' ORDER BY 1) AS "Colocation Groups" FROM public.citus_tables WHERE table_name::text LIKE 'adt%' GROUP BY colocation_id ORDER BY 1;
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SELECT conrelid::regclass::text AS "Referencing Table", pg_get_constraintdef(oid, true) AS "Definition" FROM pg_constraint
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WHERE (conrelid::regclass::text = 'adt_col' OR confrelid::regclass::text = 'adt_col') ORDER BY 1;
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SET client_min_messages TO WARNING;
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SELECT alter_distributed_table('adt_table', shard_count:=6, cascade_to_colocated:=true);
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SET client_min_messages TO DEFAULT;
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SELECT table_name, citus_table_type, distribution_column, shard_count FROM public.citus_tables WHERE table_name::text LIKE 'adt%';
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SELECT STRING_AGG(table_name::text, ', ' ORDER BY 1) AS "Colocation Groups" FROM public.citus_tables WHERE table_name::text LIKE 'adt%' GROUP BY colocation_id ORDER BY 1;
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SELECT conrelid::regclass::text AS "Referencing Table", pg_get_constraintdef(oid, true) AS "Definition" FROM pg_constraint
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WHERE (conrelid::regclass::text = 'adt_col' OR confrelid::regclass::text = 'adt_col') ORDER BY 1;
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SELECT alter_distributed_table('adt_table', distribution_column:='b', colocate_with:='none');
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SELECT table_name, citus_table_type, distribution_column, shard_count FROM public.citus_tables WHERE table_name::text LIKE 'adt%';
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SELECT STRING_AGG(table_name::text, ', ' ORDER BY 1) AS "Colocation Groups" FROM public.citus_tables WHERE table_name::text LIKE 'adt%' GROUP BY colocation_id ORDER BY 1;
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SELECT conrelid::regclass::text AS "Referencing Table", pg_get_constraintdef(oid, true) AS "Definition" FROM pg_constraint
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WHERE (conrelid::regclass::text = 'adt_col' OR confrelid::regclass::text = 'adt_col') ORDER BY 1;
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SELECT * FROM adt_table ORDER BY 1;
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SELECT * FROM adt_col ORDER BY 1;
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SELECT * FROM adt_ref ORDER BY 1;
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SET client_min_messages TO WARNING;
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BEGIN;
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INSERT INTO adt_table SELECT x, x+1 FROM generate_series(1, 1000) x;
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SELECT alter_distributed_table('adt_table', distribution_column:='a');
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SELECT COUNT(*) FROM adt_table;
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END;
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SELECT table_name, citus_table_type, distribution_column, shard_count FROM public.citus_tables WHERE table_name::text = 'adt_table';
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SET client_min_messages TO DEFAULT;
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-- issue 4508 table_1 and table_2 are used to test
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-- some edge cases around intermediate result pruning
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CREATE TABLE table_1 (key int, value text);
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SELECT create_distributed_table('table_1', 'key');
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CREATE TABLE table_2 (key int, value text);
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SELECT create_distributed_table('table_2', 'key');
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INSERT INTO table_1 VALUES (1, '1'), (2, '2'), (3, '3'), (4, '4');
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INSERT INTO table_2 VALUES (1, '1'), (2, '2'), (3, '3'), (4, '4'), (5, '5'), (6, '6');
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SET citus.log_intermediate_results TO ON;
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SET client_min_messages to debug1;
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WITH a AS (SELECT * FROM table_1 ORDER BY 1,2 DESC LIMIT 1)
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SELECT count(*),
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key
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FROM a JOIN table_2 USING (key)
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GROUP BY key
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HAVING (max(table_2.value) >= (SELECT value FROM a));
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WITH a AS (SELECT * FROM table_1 ORDER BY 1,2 DESC LIMIT 1)
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INSERT INTO table_1 SELECT count(*),
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key
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FROM a JOIN table_2 USING (key)
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GROUP BY key
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HAVING (max(table_2.value) >= (SELECT value FROM a));
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WITH stats AS (
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SELECT count(key) m FROM table_1
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),
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inserts AS (
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INSERT INTO table_2
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SELECT key, count(*)
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FROM table_1
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WHERE key >= (SELECT m FROM stats)
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GROUP BY key
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HAVING count(*) <= (SELECT m FROM stats)
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LIMIT 1
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RETURNING *
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) SELECT count(*) FROM inserts;
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-- a helper function which return true if the coordinated
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-- trannsaction uses 2PC
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SET citus.enable_metadata_sync TO OFF;
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CREATE OR REPLACE FUNCTION coordinated_transaction_should_use_2PC()
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RETURNS BOOL LANGUAGE C STRICT VOLATILE AS 'citus',
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$$coordinated_transaction_should_use_2PC$$;
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RESET citus.enable_metadata_sync;
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-- a local SELECT followed by remote SELECTs
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-- does not trigger 2PC
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BEGIN;
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SELECT y FROM test WHERE x = 1;
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WITH cte_1 AS (SELECT y FROM test WHERE x = 1 LIMIT 5) SELECT count(*) FROM test;
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SELECT count(*) FROM test;
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WITH cte_1 as (SELECT * FROM test LIMIT 5) SELECT count(*) FROM test;
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SELECT coordinated_transaction_should_use_2PC();
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COMMIT;
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-- remote SELECTs followed by local SELECTs
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-- does not trigger 2PC
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BEGIN;
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SELECT count(*) FROM test;
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WITH cte_1 as (SELECT * FROM test LIMIT 5) SELECT count(*) FROM test;
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SELECT y FROM test WHERE x = 1;
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WITH cte_1 AS (SELECT y FROM test WHERE x = 1 LIMIT 5) SELECT count(*) FROM test;
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SELECT coordinated_transaction_should_use_2PC();
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COMMIT;
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-- a local SELECT followed by a remote Modify
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-- triggers 2PC
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BEGIN;
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SELECT y FROM test WHERE x = 1;
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UPDATE test SET y = y +1;
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SELECT coordinated_transaction_should_use_2PC();
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COMMIT;
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-- a local modify followed by a remote SELECT
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-- triggers 2PC
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BEGIN;
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INSERT INTO test VALUES (1,1);
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SELECT count(*) FROM test;
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SELECT coordinated_transaction_should_use_2PC();
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COMMIT;
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-- a local modify followed by a remote MODIFY
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-- triggers 2PC
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BEGIN;
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INSERT INTO test VALUES (1,1);
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UPDATE test SET y = y +1;
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SELECT coordinated_transaction_should_use_2PC();
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COMMIT;
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-- a local modify followed by a remote single shard MODIFY
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-- triggers 2PC
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BEGIN;
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INSERT INTO test VALUES (1,1);
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INSERT INTO test VALUES (3,3);
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SELECT coordinated_transaction_should_use_2PC();
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COMMIT;
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-- a remote single shard modify followed by a local single
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-- shard MODIFY triggers 2PC
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BEGIN;
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INSERT INTO test VALUES (3,3);
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INSERT INTO test VALUES (1,1);
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SELECT coordinated_transaction_should_use_2PC();
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COMMIT;
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-- a remote single shard select followed by a local single
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-- shard MODIFY triggers 2PC. But, the transaction manager
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-- is smart enough to skip sending 2PC as the remote
|
|
-- command is read only
|
|
BEGIN;
|
|
SELECT count(*) FROM test WHERE x = 3;
|
|
INSERT INTO test VALUES (1,1);
|
|
SELECT coordinated_transaction_should_use_2PC();
|
|
SET LOCAL citus.log_remote_commands TO ON;
|
|
COMMIT;
|
|
|
|
-- a local single shard select followed by a remote single
|
|
-- shard modify does not trigger 2PC
|
|
BEGIN;
|
|
SELECT count(*) FROM test WHERE x = 1;
|
|
INSERT INTO test VALUES (3,3);
|
|
SELECT coordinated_transaction_should_use_2PC();
|
|
SET LOCAL citus.log_remote_commands TO ON;
|
|
COMMIT;
|
|
|
|
RESET client_min_messages;
|
|
\set VERBOSITY terse
|
|
DROP TABLE ref_table;
|
|
|
|
DELETE FROM test;
|
|
DROP TABLE test;
|
|
DROP TABLE dist_table;
|
|
DROP TABLE ref;
|
|
DROP TABLE test_append_table;
|
|
|
|
DROP SCHEMA coordinator_shouldhaveshards CASCADE;
|
|
|
|
SELECT 1 FROM master_set_node_property('localhost', :master_port, 'shouldhaveshards', false);
|