mirror of https://github.com/citusdata/citus.git
873 lines
24 KiB
PL/PgSQL
873 lines
24 KiB
PL/PgSQL
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ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 1200000;
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ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 1200000;
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-- ===================================================================
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-- test end-to-end modification functionality
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-- ===================================================================
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CREATE TABLE researchers (
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id bigint NOT NULL,
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lab_id int NOT NULL,
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name text NOT NULL
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);
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CREATE TABLE labs (
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id bigint NOT NULL,
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name text NOT NULL
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);
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SELECT master_create_distributed_table('researchers', 'lab_id', 'hash');
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SELECT master_create_worker_shards('researchers', 2, 2);
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SELECT master_create_distributed_table('labs', 'id', 'hash');
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SELECT master_create_worker_shards('labs', 1, 1);
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-- might be confusing to have two people in the same lab with the same name
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CREATE UNIQUE INDEX avoid_name_confusion_idx ON researchers (lab_id, name);
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-- add some data
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INSERT INTO researchers VALUES (1, 1, 'Donald Knuth');
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INSERT INTO researchers VALUES (2, 1, 'Niklaus Wirth');
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INSERT INTO researchers VALUES (3, 2, 'Tony Hoare');
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INSERT INTO researchers VALUES (4, 2, 'Kenneth Iverson');
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-- replace a researcher, reusing their id
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BEGIN;
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DELETE FROM researchers WHERE lab_id = 1 AND id = 2;
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INSERT INTO researchers VALUES (2, 1, 'John Backus');
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COMMIT;
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SELECT name FROM researchers WHERE lab_id = 1 AND id = 2;
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-- abort a modification
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BEGIN;
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DELETE FROM researchers WHERE lab_id = 1 AND id = 1;
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ABORT;
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SELECT name FROM researchers WHERE lab_id = 1 AND id = 1;
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-- trigger a unique constraint violation
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BEGIN;
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UPDATE researchers SET name = 'John Backus' WHERE id = 1 AND lab_id = 1;
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ABORT;
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-- creating savepoints should work...
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BEGIN;
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INSERT INTO researchers VALUES (5, 3, 'Dennis Ritchie');
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SAVEPOINT hire_thompson;
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INSERT INTO researchers VALUES (6, 3, 'Ken Thompson');
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COMMIT;
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SELECT name FROM researchers WHERE lab_id = 3 AND id = 6;
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-- even if created by PL/pgSQL...
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\set VERBOSITY terse
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BEGIN;
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DO $$
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BEGIN
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INSERT INTO researchers VALUES (10, 10, 'Edsger Dijkstra');
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EXCEPTION
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WHEN not_null_violation THEN
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RAISE NOTICE 'caught not_null_violation';
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END $$;
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COMMIT;
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-- but rollback should not
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BEGIN;
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INSERT INTO researchers VALUES (7, 4, 'Jim Gray');
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SAVEPOINT hire_engelbart;
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INSERT INTO researchers VALUES (8, 4, 'Douglas Engelbart');
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ROLLBACK TO hire_engelbart;
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COMMIT;
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SELECT name FROM researchers WHERE lab_id = 4;
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BEGIN;
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DO $$
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BEGIN
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INSERT INTO researchers VALUES (11, 11, 'Whitfield Diffie');
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INSERT INTO researchers VALUES (NULL, 10, 'Edsger Dijkstra');
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EXCEPTION
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WHEN not_null_violation THEN
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RAISE NOTICE 'caught not_null_violation';
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END $$;
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COMMIT;
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\set VERBOSITY default
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-- should be valid to edit labs after researchers...
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BEGIN;
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INSERT INTO researchers VALUES (8, 5, 'Douglas Engelbart');
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INSERT INTO labs VALUES (5, 'Los Alamos');
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COMMIT;
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SELECT * FROM researchers, labs WHERE labs.id = researchers.lab_id;
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-- but not the other way around (would require expanding xact participants)...
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BEGIN;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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INSERT INTO researchers VALUES (9, 6, 'Leslie Lamport');
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COMMIT;
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-- unless we disable deadlock prevention
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BEGIN;
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SET citus.enable_deadlock_prevention TO off;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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INSERT INTO researchers VALUES (9, 6, 'Leslie Lamport');
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ABORT;
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-- SELECTs may occur after a modification: First check that selecting
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-- from the modified node works.
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BEGIN;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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SELECT count(*) FROM researchers WHERE lab_id = 6;
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ABORT;
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-- then check that SELECT going to new node still is fine
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BEGIN;
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UPDATE pg_dist_shard_placement AS sp SET shardstate = 3
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FROM pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND sp.nodename = 'localhost'
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AND sp.nodeport = :worker_1_port
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AND s.logicalrelid = 'researchers'::regclass;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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SELECT count(*) FROM researchers WHERE lab_id = 6;
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ABORT;
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-- applies to DDL, too
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BEGIN;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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ALTER TABLE labs ADD COLUMN motto text;
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COMMIT;
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-- whether it occurs first or second
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BEGIN;
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ALTER TABLE labs ADD COLUMN motto text;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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COMMIT;
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-- but the DDL should correctly roll back
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\d labs
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SELECT * FROM labs WHERE id = 6;
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-- COPY can happen after single row INSERT
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BEGIN;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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\copy labs from stdin delimiter ','
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10,Weyland-Yutani
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\.
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COMMIT;
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-- COPY can happen before single row INSERT
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BEGIN;
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\copy labs from stdin delimiter ','
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10,Weyland-Yutani
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\.
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SELECT name FROM labs WHERE id = 10;
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INSERT INTO labs VALUES (6, 'Bell Labs');
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COMMIT;
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-- two consecutive COPYs in a transaction are allowed
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BEGIN;
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\copy labs from stdin delimiter ','
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11,Planet Express
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\.
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\copy labs from stdin delimiter ','
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12,fsociety
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\.
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COMMIT;
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SELECT name FROM labs WHERE id = 11 OR id = 12 ORDER BY id;
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-- 1pc failure test
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SELECT recover_prepared_transactions();
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-- copy with unique index violation
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BEGIN;
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\copy researchers FROM STDIN delimiter ','
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17, 6, 'Bjarne Stroustrup'
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\.
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\copy researchers FROM STDIN delimiter ','
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18, 6, 'Bjarne Stroustrup'
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\.
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COMMIT;
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-- verify rollback
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SELECT * FROM researchers WHERE lab_id = 6;
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SELECT count(*) FROM pg_dist_transaction;
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-- 2pc failure and success tests
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SET citus.multi_shard_commit_protocol TO '2pc';
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SELECT recover_prepared_transactions();
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-- copy with unique index violation
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BEGIN;
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\copy researchers FROM STDIN delimiter ','
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17, 6, 'Bjarne Stroustrup'
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\.
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\copy researchers FROM STDIN delimiter ','
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18, 6, 'Bjarne Stroustrup'
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\.
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COMMIT;
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-- verify rollback
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SELECT * FROM researchers WHERE lab_id = 6;
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SELECT count(*) FROM pg_dist_transaction;
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BEGIN;
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\copy researchers FROM STDIN delimiter ','
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17, 6, 'Bjarne Stroustrup'
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\.
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\copy researchers FROM STDIN delimiter ','
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18, 6, 'Dennis Ritchie'
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\.
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COMMIT;
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-- verify success
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SELECT * FROM researchers WHERE lab_id = 6;
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-- verify 2pc
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SELECT count(*) FROM pg_dist_transaction;
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RESET citus.multi_shard_commit_protocol;
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-- create a check function
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SELECT * from run_command_on_workers('CREATE FUNCTION reject_large_id() RETURNS trigger AS $rli$
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BEGIN
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IF (NEW.id > 30) THEN
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RAISE ''illegal value'';
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END IF;
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RETURN NEW;
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END;
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$rli$ LANGUAGE plpgsql;')
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ORDER BY nodeport;
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-- register after insert trigger
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SELECT * FROM run_command_on_placements('researchers', 'CREATE CONSTRAINT TRIGGER reject_large_researcher_id AFTER INSERT ON %s DEFERRABLE INITIALLY DEFERRED FOR EACH ROW EXECUTE PROCEDURE reject_large_id()')
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ORDER BY nodeport, shardid;
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-- hide postgresql version dependend messages for next test only
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\set VERBOSITY terse
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-- deferred check should abort the transaction
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BEGIN;
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DELETE FROM researchers WHERE lab_id = 6;
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\copy researchers FROM STDIN delimiter ','
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31, 6, 'Bjarne Stroustrup'
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\.
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\copy researchers FROM STDIN delimiter ','
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30, 6, 'Dennis Ritchie'
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\.
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COMMIT;
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\unset VERBOSITY
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-- verify everyhing including delete is rolled back
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SELECT * FROM researchers WHERE lab_id = 6;
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-- cleanup triggers and the function
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SELECT * from run_command_on_placements('researchers', 'drop trigger reject_large_researcher_id on %s')
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ORDER BY nodeport, shardid;
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SELECT * FROM run_command_on_workers('drop function reject_large_id()')
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ORDER BY nodeport;
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-- finally, ALTER and copy aren't compatible
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BEGIN;
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ALTER TABLE labs ADD COLUMN motto text;
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\copy labs from stdin delimiter ','
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12,fsociety,lol
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\.
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COMMIT;
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-- but the DDL should correctly roll back
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\d labs
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-- and if the copy is before the ALTER...
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BEGIN;
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\copy labs from stdin delimiter ','
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12,fsociety
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\.
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ALTER TABLE labs ADD COLUMN motto text;
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COMMIT;
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-- the DDL fails, but copy persists
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\d labs
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SELECT * FROM labs WHERE id = 12;
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-- multi-shard operations can co-exist with DDL in a transactional way
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BEGIN;
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ALTER TABLE labs ADD COLUMN motto text;
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SELECT master_modify_multiple_shards('DELETE FROM labs');
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ALTER TABLE labs ADD COLUMN score float;
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ROLLBACK;
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-- should have rolled everything back
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SELECT * FROM labs WHERE id = 12;
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-- now, for some special failures...
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CREATE TABLE objects (
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id bigint PRIMARY KEY,
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name text NOT NULL
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);
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SELECT master_create_distributed_table('objects', 'id', 'hash');
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SELECT master_create_worker_shards('objects', 1, 2);
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-- test primary key violations
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BEGIN;
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INSERT INTO objects VALUES (1, 'apple');
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INSERT INTO objects VALUES (1, 'orange');
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COMMIT;
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-- data shouldn't have persisted...
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SELECT * FROM objects WHERE id = 1;
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-- and placements should still be healthy...
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SELECT count(*)
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FROM pg_dist_shard_placement AS sp,
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pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND sp.shardstate = 1
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AND s.logicalrelid = 'objects'::regclass;
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-- create trigger on one worker to reject certain values
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\c - - - :worker_2_port
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CREATE FUNCTION reject_bad() RETURNS trigger AS $rb$
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BEGIN
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IF (NEW.name = 'BAD') THEN
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RAISE 'illegal value';
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END IF;
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RETURN NEW;
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END;
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$rb$ LANGUAGE plpgsql;
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CREATE CONSTRAINT TRIGGER reject_bad
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AFTER INSERT ON objects_1200003
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DEFERRABLE INITIALLY IMMEDIATE
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FOR EACH ROW EXECUTE PROCEDURE reject_bad();
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\c - - - :master_port
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-- test partial failure; worker_1 succeeds, 2 fails
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\set VERBOSITY terse
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BEGIN;
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INSERT INTO objects VALUES (1, 'apple');
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INSERT INTO objects VALUES (2, 'BAD');
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INSERT INTO labs VALUES (7, 'E Corp');
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COMMIT;
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-- data should be persisted
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SELECT * FROM objects WHERE id = 2;
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SELECT * FROM labs WHERE id = 7;
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-- but one placement should be bad
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SELECT count(*)
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FROM pg_dist_shard_placement AS sp,
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pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND sp.nodename = 'localhost'
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AND sp.nodeport = :worker_2_port
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AND sp.shardstate = 3
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AND s.logicalrelid = 'objects'::regclass;
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DELETE FROM objects;
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-- mark shards as healthy again; delete all data
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UPDATE pg_dist_shard_placement AS sp SET shardstate = 1
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FROM pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND s.logicalrelid = 'objects'::regclass;
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-- what if there are errors on different shards at different times?
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\c - - - :worker_1_port
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CREATE FUNCTION reject_bad() RETURNS trigger AS $rb$
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BEGIN
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IF (NEW.name = 'BAD') THEN
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RAISE 'illegal value';
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END IF;
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RETURN NEW;
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END;
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$rb$ LANGUAGE plpgsql;
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CREATE CONSTRAINT TRIGGER reject_bad
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AFTER INSERT ON labs_1200002
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DEFERRABLE INITIALLY IMMEDIATE
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FOR EACH ROW EXECUTE PROCEDURE reject_bad();
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\c - - - :master_port
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BEGIN;
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INSERT INTO objects VALUES (1, 'apple');
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INSERT INTO objects VALUES (2, 'BAD');
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INSERT INTO labs VALUES (8, 'Aperture Science');
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INSERT INTO labs VALUES (9, 'BAD');
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COMMIT;
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-- data should NOT be persisted
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SELECT * FROM objects WHERE id = 1;
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SELECT * FROM labs WHERE id = 8;
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-- all placements should remain healthy
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SELECT count(*)
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FROM pg_dist_shard_placement AS sp,
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pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND sp.shardstate = 1
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AND (s.logicalrelid = 'objects'::regclass OR
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s.logicalrelid = 'labs'::regclass);
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-- what if the failures happen at COMMIT time?
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\c - - - :worker_2_port
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DROP TRIGGER reject_bad ON objects_1200003;
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CREATE CONSTRAINT TRIGGER reject_bad
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AFTER INSERT ON objects_1200003
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DEFERRABLE INITIALLY DEFERRED
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FOR EACH ROW EXECUTE PROCEDURE reject_bad();
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\c - - - :master_port
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-- should be the same story as before, just at COMMIT time
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BEGIN;
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INSERT INTO objects VALUES (1, 'apple');
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INSERT INTO objects VALUES (2, 'BAD');
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INSERT INTO labs VALUES (9, 'Umbrella Corporation');
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COMMIT;
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-- data should be persisted
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SELECT * FROM objects WHERE id = 2;
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SELECT * FROM labs WHERE id = 7;
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-- but one placement should be bad
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SELECT count(*)
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FROM pg_dist_shard_placement AS sp,
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pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND sp.nodename = 'localhost'
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AND sp.nodeport = :worker_2_port
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AND sp.shardstate = 3
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AND s.logicalrelid = 'objects'::regclass;
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DELETE FROM objects;
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-- mark shards as healthy again; delete all data
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UPDATE pg_dist_shard_placement AS sp SET shardstate = 1
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FROM pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND s.logicalrelid = 'objects'::regclass;
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-- what if all nodes have failures at COMMIT time?
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\c - - - :worker_1_port
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DROP TRIGGER reject_bad ON labs_1200002;
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CREATE CONSTRAINT TRIGGER reject_bad
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AFTER INSERT ON labs_1200002
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DEFERRABLE INITIALLY DEFERRED
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FOR EACH ROW EXECUTE PROCEDURE reject_bad();
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\c - - - :master_port
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BEGIN;
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INSERT INTO objects VALUES (1, 'apple');
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INSERT INTO objects VALUES (2, 'BAD');
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INSERT INTO labs VALUES (8, 'Aperture Science');
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INSERT INTO labs VALUES (9, 'BAD');
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COMMIT;
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-- data should NOT be persisted
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SELECT * FROM objects WHERE id = 1;
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SELECT * FROM labs WHERE id = 8;
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-- all placements should remain healthy
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SELECT count(*)
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FROM pg_dist_shard_placement AS sp,
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pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND sp.shardstate = 1
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AND (s.logicalrelid = 'objects'::regclass OR
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s.logicalrelid = 'labs'::regclass);
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-- what if one shard (objects) succeeds but another (labs) completely fails?
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\c - - - :worker_2_port
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DROP TRIGGER reject_bad ON objects_1200003;
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\c - - - :master_port
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BEGIN;
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INSERT INTO objects VALUES (1, 'apple');
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INSERT INTO labs VALUES (8, 'Aperture Science');
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INSERT INTO labs VALUES (9, 'BAD');
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COMMIT;
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\set VERBOSITY default
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-- data to objects should be persisted, but labs should not...
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SELECT * FROM objects WHERE id = 1;
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SELECT * FROM labs WHERE id = 8;
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-- labs should be healthy, but one object placement shouldn't be
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SELECT s.logicalrelid::regclass::text, sp.shardstate, count(*)
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FROM pg_dist_shard_placement AS sp,
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pg_dist_shard AS s
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WHERE sp.shardid = s.shardid
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AND (s.logicalrelid = 'objects'::regclass OR
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s.logicalrelid = 'labs'::regclass)
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GROUP BY s.logicalrelid, sp.shardstate
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ORDER BY s.logicalrelid, sp.shardstate;
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-- some append-partitioned tests for good measure
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CREATE TABLE append_researchers ( LIKE researchers );
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SELECT master_create_distributed_table('append_researchers', 'id', 'append');
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SET citus.shard_replication_factor TO 1;
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SELECT master_create_empty_shard('append_researchers') AS new_shard_id
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\gset
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UPDATE pg_dist_shard SET shardminvalue = 0, shardmaxvalue = 500000
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WHERE shardid = :new_shard_id;
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SELECT master_create_empty_shard('append_researchers') AS new_shard_id
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\gset
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UPDATE pg_dist_shard SET shardminvalue = 500000, shardmaxvalue = 1000000
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WHERE shardid = :new_shard_id;
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SET citus.shard_replication_factor TO DEFAULT;
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-- try single-shard INSERT
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BEGIN;
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INSERT INTO append_researchers VALUES (0, 0, 'John Backus');
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COMMIT;
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SELECT * FROM append_researchers WHERE id = 0;
|
|
|
|
-- try rollback
|
|
BEGIN;
|
|
DELETE FROM append_researchers WHERE id = 0;
|
|
ROLLBACK;
|
|
|
|
SELECT * FROM append_researchers WHERE id = 0;
|
|
|
|
-- try hitting shard on other node
|
|
BEGIN;
|
|
INSERT INTO append_researchers VALUES (1, 1, 'John McCarthy');
|
|
INSERT INTO append_researchers VALUES (500000, 500000, 'Tony Hoare');
|
|
ROLLBACK;
|
|
|
|
SELECT * FROM append_researchers;
|
|
|
|
-- we use 2PC for reference tables by default
|
|
-- let's add some tests for them
|
|
CREATE TABLE reference_modifying_xacts (key int, value int);
|
|
SELECT create_reference_table('reference_modifying_xacts');
|
|
|
|
-- very basic test, ensure that INSERTs work
|
|
INSERT INTO reference_modifying_xacts VALUES (1, 1);
|
|
SELECT * FROM reference_modifying_xacts;
|
|
|
|
-- now ensure that it works in a transaction as well
|
|
BEGIN;
|
|
INSERT INTO reference_modifying_xacts VALUES (2, 2);
|
|
SELECT * FROM reference_modifying_xacts;
|
|
COMMIT;
|
|
|
|
-- we should be able to see the insert outside of the transaction as well
|
|
SELECT * FROM reference_modifying_xacts;
|
|
|
|
-- rollback should also work
|
|
BEGIN;
|
|
INSERT INTO reference_modifying_xacts VALUES (3, 3);
|
|
SELECT * FROM reference_modifying_xacts;
|
|
ROLLBACK;
|
|
|
|
-- see that we've not inserted
|
|
SELECT * FROM reference_modifying_xacts;
|
|
|
|
-- lets fail on of the workers at before the commit time
|
|
\c - - - :worker_1_port
|
|
|
|
CREATE FUNCTION reject_bad_reference() RETURNS trigger AS $rb$
|
|
BEGIN
|
|
IF (NEW.key = 999) THEN
|
|
RAISE 'illegal value';
|
|
END IF;
|
|
|
|
RETURN NEW;
|
|
END;
|
|
$rb$ LANGUAGE plpgsql;
|
|
|
|
CREATE CONSTRAINT TRIGGER reject_bad_reference
|
|
AFTER INSERT ON reference_modifying_xacts_1200006
|
|
DEFERRABLE INITIALLY IMMEDIATE
|
|
FOR EACH ROW EXECUTE PROCEDURE reject_bad_reference();
|
|
|
|
\c - - - :master_port
|
|
\set VERBOSITY terse
|
|
-- try without wrapping inside a transaction
|
|
INSERT INTO reference_modifying_xacts VALUES (999, 3);
|
|
|
|
-- same test within a transaction
|
|
BEGIN;
|
|
INSERT INTO reference_modifying_xacts VALUES (999, 3);
|
|
COMMIT;
|
|
|
|
-- lets fail one of the workers at COMMIT time
|
|
\c - - - :worker_1_port
|
|
DROP TRIGGER reject_bad_reference ON reference_modifying_xacts_1200006;
|
|
|
|
CREATE CONSTRAINT TRIGGER reject_bad_reference
|
|
AFTER INSERT ON reference_modifying_xacts_1200006
|
|
DEFERRABLE INITIALLY DEFERRED
|
|
FOR EACH ROW EXECUTE PROCEDURE reject_bad_reference();
|
|
|
|
\c - - - :master_port
|
|
\set VERBOSITY terse
|
|
|
|
-- try without wrapping inside a transaction
|
|
INSERT INTO reference_modifying_xacts VALUES (999, 3);
|
|
|
|
-- same test within a transaction
|
|
BEGIN;
|
|
INSERT INTO reference_modifying_xacts VALUES (999, 3);
|
|
COMMIT;
|
|
|
|
-- all placements should be healthy
|
|
SELECT s.logicalrelid::regclass::text, sp.shardstate, count(*)
|
|
FROM pg_dist_shard_placement AS sp,
|
|
pg_dist_shard AS s
|
|
WHERE sp.shardid = s.shardid
|
|
AND s.logicalrelid = 'reference_modifying_xacts'::regclass
|
|
GROUP BY s.logicalrelid, sp.shardstate
|
|
ORDER BY s.logicalrelid, sp.shardstate;
|
|
|
|
-- for the time-being drop the constraint
|
|
\c - - - :worker_1_port
|
|
DROP TRIGGER reject_bad_reference ON reference_modifying_xacts_1200006;
|
|
|
|
|
|
\c - - - :master_port
|
|
|
|
-- now create a hash distributed table and run tests
|
|
-- including both the reference table and the hash
|
|
-- distributed table
|
|
SET citus.shard_count = 4;
|
|
SET citus.shard_replication_factor = 1;
|
|
CREATE TABLE hash_modifying_xacts (key int, value int);
|
|
SELECT create_distributed_table('hash_modifying_xacts', 'key');
|
|
|
|
-- let's try to expand the xact participants
|
|
BEGIN;
|
|
INSERT INTO hash_modifying_xacts VALUES (1, 1);
|
|
INSERT INTO reference_modifying_xacts VALUES (10, 10);
|
|
COMMIT;
|
|
|
|
-- it is allowed when turning off deadlock prevention
|
|
BEGIN;
|
|
SET citus.enable_deadlock_prevention TO off;
|
|
INSERT INTO hash_modifying_xacts VALUES (1, 1);
|
|
INSERT INTO reference_modifying_xacts VALUES (10, 10);
|
|
ABORT;
|
|
|
|
BEGIN;
|
|
SET citus.enable_deadlock_prevention TO off;
|
|
INSERT INTO hash_modifying_xacts VALUES (1, 1);
|
|
INSERT INTO hash_modifying_xacts VALUES (2, 2);
|
|
ABORT;
|
|
|
|
-- lets fail one of the workers before COMMIT time for the hash table
|
|
\c - - - :worker_1_port
|
|
|
|
CREATE FUNCTION reject_bad_hash() RETURNS trigger AS $rb$
|
|
BEGIN
|
|
IF (NEW.key = 997) THEN
|
|
RAISE 'illegal value';
|
|
END IF;
|
|
|
|
RETURN NEW;
|
|
END;
|
|
$rb$ LANGUAGE plpgsql;
|
|
|
|
CREATE CONSTRAINT TRIGGER reject_bad_hash
|
|
AFTER INSERT ON hash_modifying_xacts_1200007
|
|
DEFERRABLE INITIALLY IMMEDIATE
|
|
FOR EACH ROW EXECUTE PROCEDURE reject_bad_hash();
|
|
|
|
\c - - - :master_port
|
|
\set VERBOSITY terse
|
|
|
|
-- the transaction as a whole should fail
|
|
BEGIN;
|
|
INSERT INTO reference_modifying_xacts VALUES (55, 10);
|
|
INSERT INTO hash_modifying_xacts VALUES (997, 1);
|
|
COMMIT;
|
|
|
|
-- ensure that the value didn't go into the reference table
|
|
SELECT * FROM reference_modifying_xacts WHERE key = 55;
|
|
|
|
-- now lets fail on of the workers for the hash distributed table table
|
|
-- when there is a reference table involved
|
|
\c - - - :worker_1_port
|
|
DROP TRIGGER reject_bad_hash ON hash_modifying_xacts_1200007;
|
|
|
|
-- the trigger is on execution time
|
|
CREATE CONSTRAINT TRIGGER reject_bad_hash
|
|
AFTER INSERT ON hash_modifying_xacts_1200007
|
|
DEFERRABLE INITIALLY DEFERRED
|
|
FOR EACH ROW EXECUTE PROCEDURE reject_bad_hash();
|
|
|
|
\c - - - :master_port
|
|
\set VERBOSITY terse
|
|
|
|
-- the transaction as a whole should fail
|
|
BEGIN;
|
|
INSERT INTO reference_modifying_xacts VALUES (12, 12);
|
|
INSERT INTO hash_modifying_xacts VALUES (997, 1);
|
|
COMMIT;
|
|
|
|
-- ensure that the values didn't go into the reference table
|
|
SELECT * FROM reference_modifying_xacts WHERE key = 12;
|
|
|
|
-- all placements should be healthy
|
|
SELECT s.logicalrelid::regclass::text, sp.shardstate, count(*)
|
|
FROM pg_dist_shard_placement AS sp,
|
|
pg_dist_shard AS s
|
|
WHERE sp.shardid = s.shardid
|
|
AND (s.logicalrelid = 'reference_modifying_xacts'::regclass OR
|
|
s.logicalrelid = 'hash_modifying_xacts'::regclass)
|
|
GROUP BY s.logicalrelid, sp.shardstate
|
|
ORDER BY s.logicalrelid, sp.shardstate;
|
|
|
|
-- now, fail the insert on reference table
|
|
-- and ensure that hash distributed table's
|
|
-- change is rollbacked as well
|
|
|
|
\c - - - :worker_1_port
|
|
|
|
CREATE CONSTRAINT TRIGGER reject_bad_reference
|
|
AFTER INSERT ON reference_modifying_xacts_1200006
|
|
DEFERRABLE INITIALLY IMMEDIATE
|
|
FOR EACH ROW EXECUTE PROCEDURE reject_bad_reference();
|
|
|
|
\c - - - :master_port
|
|
\set VERBOSITY terse
|
|
|
|
BEGIN;
|
|
|
|
-- to expand participant to include all worker nodes
|
|
INSERT INTO reference_modifying_xacts VALUES (66, 3);
|
|
INSERT INTO hash_modifying_xacts VALUES (80, 1);
|
|
INSERT INTO reference_modifying_xacts VALUES (999, 3);
|
|
COMMIT;
|
|
|
|
SELECT * FROM hash_modifying_xacts WHERE key = 80;
|
|
SELECT * FROM reference_modifying_xacts WHERE key = 66;
|
|
SELECT * FROM reference_modifying_xacts WHERE key = 999;
|
|
|
|
-- all placements should be healthy
|
|
SELECT s.logicalrelid::regclass::text, sp.shardstate, count(*)
|
|
FROM pg_dist_shard_placement AS sp,
|
|
pg_dist_shard AS s
|
|
WHERE sp.shardid = s.shardid
|
|
AND (s.logicalrelid = 'reference_modifying_xacts'::regclass OR
|
|
s.logicalrelid = 'hash_modifying_xacts'::regclass)
|
|
GROUP BY s.logicalrelid, sp.shardstate
|
|
ORDER BY s.logicalrelid, sp.shardstate;
|
|
|
|
-- now show that all modifications to reference
|
|
-- tables are done in 2PC
|
|
SELECT recover_prepared_transactions();
|
|
|
|
INSERT INTO reference_modifying_xacts VALUES (70, 70);
|
|
SELECT count(*) FROM pg_dist_transaction;
|
|
|
|
-- reset the transactions table
|
|
SELECT recover_prepared_transactions();
|
|
BEGIN;
|
|
INSERT INTO reference_modifying_xacts VALUES (71, 71);
|
|
COMMIT;
|
|
SELECT count(*) FROM pg_dist_transaction;
|
|
|
|
|
|
-- create a hash distributed tablw which spans all nodes
|
|
SET citus.shard_count = 4;
|
|
SET citus.shard_replication_factor = 2;
|
|
CREATE TABLE hash_modifying_xacts_second (key int, value int);
|
|
SELECT create_distributed_table('hash_modifying_xacts_second', 'key');
|
|
|
|
-- reset the transactions table
|
|
SELECT recover_prepared_transactions();
|
|
|
|
BEGIN;
|
|
INSERT INTO hash_modifying_xacts_second VALUES (72, 1);
|
|
INSERT INTO reference_modifying_xacts VALUES (72, 3);
|
|
COMMIT;
|
|
SELECT count(*) FROM pg_dist_transaction;
|
|
|
|
-- reset the transactions table
|
|
SELECT recover_prepared_transactions();
|
|
DELETE FROM reference_modifying_xacts;
|
|
SELECT count(*) FROM pg_dist_transaction;
|
|
|
|
-- reset the transactions table
|
|
SELECT recover_prepared_transactions();
|
|
UPDATE reference_modifying_xacts SET key = 10;
|
|
SELECT count(*) FROM pg_dist_transaction;
|
|
|
|
-- now to one more type of failure testing
|
|
-- in which we'll make the remote host unavailable
|
|
|
|
-- first create the new user on all nodes
|
|
CREATE USER test_user;
|
|
\c - - - :worker_1_port
|
|
CREATE USER test_user;
|
|
\c - - - :worker_2_port
|
|
CREATE USER test_user;
|
|
|
|
-- now connect back to the master with the new user
|
|
\c - test_user - :master_port
|
|
CREATE TABLE reference_failure_test (key int, value int);
|
|
SELECT create_reference_table('reference_failure_test');
|
|
|
|
-- ensure that the shard is created for this user
|
|
\c - test_user - :worker_1_port
|
|
\dt reference_failure_test_1200015
|
|
|
|
-- now connect with the default user,
|
|
-- and rename the existing user
|
|
\c - :default_user - :worker_1_port
|
|
ALTER USER test_user RENAME TO test_user_new;
|
|
|
|
-- connect back to master and query the reference table
|
|
\c - test_user - :master_port
|
|
-- should fail since the worker doesn't have test_user anymore
|
|
INSERT INTO reference_failure_test VALUES (1, '1');
|
|
|
|
-- the same as the above, but wrapped within a transaction
|
|
BEGIN;
|
|
INSERT INTO reference_failure_test VALUES (1, '1');
|
|
COMMIT;
|
|
|
|
-- show that no data go through the table and shard states are good
|
|
SELECT * FROM reference_failure_test;
|
|
|
|
-- all placements should be healthy
|
|
SELECT s.logicalrelid::regclass::text, sp.shardstate, count(*)
|
|
FROM pg_dist_shard_placement AS sp,
|
|
pg_dist_shard AS s
|
|
WHERE sp.shardid = s.shardid
|
|
AND s.logicalrelid = 'reference_failure_test'::regclass
|
|
GROUP BY s.logicalrelid, sp.shardstate
|
|
ORDER BY s.logicalrelid, sp.shardstate;
|
|
|
|
-- connect back to the worker and set rename the test_user back
|
|
\c - :default_user - :worker_1_port
|
|
ALTER USER test_user_new RENAME TO test_user;
|
|
|
|
-- connect back to the master with the proper user to continue the tests
|
|
\c - :default_user - :master_port
|
|
DROP TABLE reference_modifying_xacts, hash_modifying_xacts, hash_modifying_xacts_second;
|