mirror of https://github.com/citusdata/citus.git
340 lines
15 KiB
PL/PgSQL
340 lines
15 KiB
PL/PgSQL
-- Test functions for copying intermediate results
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CREATE SCHEMA intermediate_results;
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SET search_path TO 'intermediate_results';
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-- helper udfs
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CREATE OR REPLACE FUNCTION pg_catalog.store_intermediate_result_on_node(nodename text, nodeport int, result_id text, query text)
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RETURNS void
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LANGUAGE C STRICT VOLATILE
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AS 'citus', $$store_intermediate_result_on_node$$;
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-- in the same transaction we can read a result
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BEGIN;
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SELECT create_intermediate_result('squares', 'SELECT s, s*s FROM generate_series(1,5) s');
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SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x int, x2 int);
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COMMIT;
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-- in separate transactions, the result is no longer available
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SELECT create_intermediate_result('squares', 'SELECT s, s*s FROM generate_series(1,5) s');
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SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x int, x2 int);
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BEGIN;
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CREATE TABLE interesting_squares (user_id text, interested_in text);
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SELECT create_distributed_table('interesting_squares', 'user_id');
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INSERT INTO interesting_squares VALUES ('jon', '2'), ('jon', '5'), ('jack', '3');
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-- put an intermediate result on all workers
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SELECT broadcast_intermediate_result('squares', 'SELECT s, s*s FROM generate_series(1,5) s');
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-- query the intermediate result in a router query
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SELECT x, x2
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FROM interesting_squares JOIN (SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x int, x2 int)) squares ON (x::text = interested_in)
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WHERE user_id = 'jon'
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ORDER BY x;
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END;
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BEGIN;
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-- put an intermediate result on all workers
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SELECT broadcast_intermediate_result('squares', 'SELECT s, s*s FROM generate_series(1,5) s');
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-- query the intermediate result in a distributed query
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SELECT x, x2
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FROM interesting_squares
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JOIN (SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x int, x2 int)) squares ON (x::text = interested_in)
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ORDER BY x;
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END;
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-- files should now be cleaned up
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SET client_min_messages TO DEBUG;
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SELECT x, x2
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FROM interesting_squares JOIN (SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x text, x2 int)) squares ON (x = interested_in)
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WHERE user_id = 'jon' OR true
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ORDER BY x;
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SET client_min_messages TO DEBUG;
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SELECT x, x2
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FROM interesting_squares JOIN (SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x text, x2 int)) squares ON (x = interested_in)
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WHERE user_id = 'jon'
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ORDER BY x;
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RESET client_min_messages;
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-- try to read the file as text, will fail because of binary encoding
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BEGIN;
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SELECT create_intermediate_result('squares', 'SELECT s, s*s FROM generate_series(1,5) s');
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SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x text, x2 int);
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END;
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-- try to read the file with wrong encoding
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BEGIN;
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SELECT create_intermediate_result('squares', 'SELECT s, s*s FROM generate_series(1,5) s');
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SELECT * FROM read_intermediate_result('squares', 'csv') AS res (x int, x2 int);
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END;
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-- try a composite type
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CREATE TYPE intermediate_results.square_type AS (x text, x2 int);
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CREATE TABLE stored_squares (user_id text, square intermediate_results.square_type, metadata jsonb);
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INSERT INTO stored_squares VALUES ('jon', '(2,4)'::intermediate_results.square_type, '{"value":2}');
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INSERT INTO stored_squares VALUES ('jon', '(3,9)'::intermediate_results.square_type, '{"value":3}');
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INSERT INTO stored_squares VALUES ('jon', '(4,16)'::intermediate_results.square_type, '{"value":4}');
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INSERT INTO stored_squares VALUES ('jon', '(5,25)'::intermediate_results.square_type, '{"value":5}');
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-- composite types change the format to text
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BEGIN;
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SELECT create_intermediate_result('stored_squares', 'SELECT square FROM stored_squares');
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SELECT * FROM read_intermediate_result('stored_squares', 'binary') AS res (s intermediate_results.square_type);
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COMMIT;
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BEGIN;
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SELECT create_intermediate_result('stored_squares', 'SELECT square FROM stored_squares');
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SELECT * FROM read_intermediate_result('stored_squares', 'text') AS res (s intermediate_results.square_type);
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COMMIT;
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BEGIN;
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-- put an intermediate result in text format on all workers
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SELECT broadcast_intermediate_result('stored_squares', 'SELECT square, metadata FROM stored_squares');
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-- query the intermediate result in a router query using text format
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SELECT * FROM interesting_squares JOIN (
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SELECT * FROM
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read_intermediate_result('stored_squares', 'text') AS res (s intermediate_results.square_type, m jsonb)
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) squares
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ON ((s).x = interested_in) WHERE user_id = 'jon' ORDER BY 1,2;
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-- query the intermediate result in a real-time query using text format
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SELECT * FROM interesting_squares JOIN (
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SELECT * FROM
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read_intermediate_result('stored_squares', 'text') AS res (s intermediate_results.square_type, m jsonb)
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) squares
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ON ((s).x = interested_in) ORDER BY 1,2;
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END;
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BEGIN;
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-- accurate row count estimates for primitive types
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SELECT create_intermediate_result('squares', 'SELECT s, s*s FROM generate_series(1,632) s');
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EXPLAIN (COSTS ON) SELECT * FROM read_intermediate_result('squares', 'binary') AS res (x int, x2 int);
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-- less accurate results for variable types
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SELECT create_intermediate_result('hellos', $$SELECT s, 'hello-'||s FROM generate_series(1,63) s$$);
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EXPLAIN (COSTS ON) SELECT * FROM read_intermediate_result('hellos', 'binary') AS res (x int, y text);
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-- not very accurate results for text encoding
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SELECT create_intermediate_result('stored_squares', 'SELECT square FROM stored_squares');
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EXPLAIN (COSTS ON) SELECT * FROM read_intermediate_result('stored_squares', 'text') AS res (s intermediate_results.square_type);
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END;
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-- pipe query output into a result file and create a table to check the result
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COPY (SELECT s, s*s FROM generate_series(1,5) s)
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TO PROGRAM
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$$psql -h localhost -p 57636 -U postgres -d regression -c "BEGIN; COPY squares FROM STDIN WITH (format result); CREATE TABLE intermediate_results.squares AS SELECT * FROM read_intermediate_result('squares', 'text') AS res(x int, x2 int); END;"$$
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WITH (FORMAT text);
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SELECT * FROM squares ORDER BY x;
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-- cannot use DDL commands
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select broadcast_intermediate_result('a', 'create table foo(int serial)');
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select broadcast_intermediate_result('a', 'prepare foo as select 1');
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select create_intermediate_result('a', 'create table foo(int serial)');
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--
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-- read_intermediate_results
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--
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BEGIN;
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SELECT create_intermediate_result('squares_1', 'SELECT s, s*s FROM generate_series(1,3) s'),
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create_intermediate_result('squares_2', 'SELECT s, s*s FROM generate_series(4,6) s'),
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create_intermediate_result('squares_3', 'SELECT s, s*s FROM generate_series(7,10) s');
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SELECT count(*) FROM read_intermediate_results(ARRAY[]::text[], 'binary') AS res (x int, x2 int);
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SELECT * FROM read_intermediate_results(ARRAY['squares_1']::text[], 'binary') AS res (x int, x2 int);
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'squares_2', 'squares_3']::text[], 'binary') AS res (x int, x2 int);
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COMMIT;
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-- in separate transactions, the result is no longer available
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SELECT create_intermediate_result('squares_1', 'SELECT s, s*s FROM generate_series(1,5) s');
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SELECT * FROM read_intermediate_results(ARRAY['squares_1']::text[], 'binary') AS res (x int, x2 int);
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-- error behaviour, and also check that results are deleted on rollback
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BEGIN;
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SELECT create_intermediate_result('squares_1', 'SELECT s, s*s FROM generate_series(1,3) s');
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SAVEPOINT s1;
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SELECT * FROM read_intermediate_results(ARRAY['notexistingfile', 'squares_1'], 'binary') AS res (x int, x2 int);
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ROLLBACK TO SAVEPOINT s1;
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'notexistingfile'], 'binary') AS res (x int, x2 int);
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ROLLBACK TO SAVEPOINT s1;
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', NULL], 'binary') AS res (x int, x2 int);
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ROLLBACK TO SAVEPOINT s1;
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-- after rollbacks we should be able to run vail read_intermediate_results still.
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SELECT count(*) FROM read_intermediate_results(ARRAY['squares_1']::text[], 'binary') AS res (x int, x2 int);
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SELECT count(*) FROM read_intermediate_results(ARRAY[]::text[], 'binary') AS res (x int, x2 int);
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END;
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SELECT * FROM read_intermediate_results(ARRAY['squares_1']::text[], 'binary') AS res (x int, x2 int);
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-- Test non-binary format: read_intermediate_results(..., 'text')
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BEGIN;
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-- ROW(...) types switch the output format to text
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SELECT broadcast_intermediate_result('stored_squares_1',
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'SELECT s, s*s, ROW(1::text, 2) FROM generate_series(1,3) s'),
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broadcast_intermediate_result('stored_squares_2',
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'SELECT s, s*s, ROW(2::text, 3) FROM generate_series(4,6) s');
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-- query the intermediate result in a router query using text format
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SELECT * FROM interesting_squares JOIN (
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SELECT * FROM
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read_intermediate_results(ARRAY['stored_squares_1', 'stored_squares_2'], 'text') AS res (x int, x2 int, z intermediate_results.square_type)
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) squares
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ON (squares.x::text = interested_in) WHERE user_id = 'jon' ORDER BY 1,2;
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END;
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-- Cost estimation for read_intermediate_results
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BEGIN;
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-- almost accurate row count estimates for primitive types
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SELECT create_intermediate_result('squares_1', 'SELECT s, s*s FROM generate_series(1,632) s'),
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create_intermediate_result('squares_2', 'SELECT s, s*s FROM generate_series(633,1024) s');
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EXPLAIN (COSTS ON) SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'squares_2'], 'binary') AS res (x int, x2 int);
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-- less accurate results for variable types
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SELECT create_intermediate_result('hellos_1', $$SELECT s, 'hello-'||s FROM generate_series(1,63) s$$),
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create_intermediate_result('hellos_2', $$SELECT s, 'hello-'||s FROM generate_series(64,129) s$$);
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EXPLAIN (COSTS ON) SELECT * FROM read_intermediate_results(ARRAY['hellos_1', 'hellos_2'], 'binary') AS res (x int, y text);
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-- not very accurate results for text encoding
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SELECT create_intermediate_result('stored_squares', 'SELECT square FROM stored_squares');
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EXPLAIN (COSTS ON) SELECT * FROM read_intermediate_results(ARRAY['stored_squares'], 'text') AS res (s intermediate_results.square_type);
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END;
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--
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-- fetch_intermediate_results
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--
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-- straightforward, single-result case
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BEGIN;
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SELECT broadcast_intermediate_result('squares_1', 'SELECT s, s*s FROM generate_series(1, 5) s');
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SELECT * FROM fetch_intermediate_results(ARRAY['squares_1']::text[], 'localhost', :worker_2_port);
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SELECT * FROM read_intermediate_result('squares_1', 'binary') AS res (x int, x2 int);
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SELECT * FROM fetch_intermediate_results(ARRAY['squares_1']::text[], 'localhost', :worker_1_port);
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SELECT * FROM read_intermediate_result('squares_1', 'binary') AS res (x int, x2 int);
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END;
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-- multiple results, and some error cases
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BEGIN;
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SELECT store_intermediate_result_on_node('localhost', :worker_1_port,
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'squares_1', 'SELECT s, s*s FROM generate_series(1, 2) s');
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SELECT store_intermediate_result_on_node('localhost', :worker_1_port,
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'squares_2', 'SELECT s, s*s FROM generate_series(3, 4) s');
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SAVEPOINT s1;
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-- results aren't available on coordinator yet
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'binary') AS res (x int, x2 int);
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ROLLBACK TO SAVEPOINT s1;
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-- fetch from invalid worker port should fail
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SELECT * FROM fetch_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'localhost', 57635);
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ROLLBACK TO SAVEPOINT s1;
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-- still, results aren't available on coordinator yet
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'binary') AS res (x int, x2 int);
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ROLLBACK TO SAVEPOINT s1;
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-- fetch from worker 1 should succeed
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SELECT * FROM fetch_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'localhost', :worker_1_port);
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'binary') AS res (x int, x2 int);
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-- fetching again should succeed
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SELECT * FROM fetch_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'localhost', :worker_1_port);
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'binary') AS res (x int, x2 int);
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ROLLBACK TO SAVEPOINT s1;
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-- empty result id list should succeed
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SELECT * FROM fetch_intermediate_results(ARRAY[]::text[], 'localhost', :worker_1_port);
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-- null in result id list should error gracefully
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SELECT * FROM fetch_intermediate_results(ARRAY[NULL, 'squares_1', 'squares_2']::text[], 'localhost', :worker_1_port);
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END;
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-- results should have been deleted after transaction commit
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SELECT * FROM read_intermediate_results(ARRAY['squares_1', 'squares_2']::text[], 'binary') AS res (x int, x2 int);
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-- test refreshing mat views
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SET client_min_messages TO ERROR;
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CREATE USER some_other_user;
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SELECT run_command_on_workers($$GRANT ALL ON DATABASE regression TO some_other_user;$$);
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GRANT ALL ON DATABASE regression TO some_other_user;
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RESET client_min_messages;
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\c - some_other_user
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CREATE SCHEMA other_schema;
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SET search_path TO other_schema;
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CREATE TABLE dist_table (a int, b int);
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INSERT INTO dist_table(a, b) SELECT n, n+1 FROM generate_series(1, 10) n;
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SELECT create_distributed_table('dist_table', 'a');
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CREATE MATERIALIZED VIEW mat_view AS
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SELECT *
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FROM (
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SELECT * FROM dist_table
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LIMIT 50000
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) q;
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CREATE MATERIALIZED VIEW mat_view_2 AS
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SELECT count(*) FROM (SELECT * FROM dist_table LIMIT 50000) q, (SELECT * FROM dist_table LIMIT 100) r WHERE q.a > r.a;
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REFRESH MATERIALIZED VIEW other_schema.mat_view;
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REFRESH MATERIALIZED VIEW other_schema.mat_view_2;
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-- Now connect back as a different user and run REFRESH MATERIALIZED VIEW command,
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-- which in turn executes a repartition join query.
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\c - postgres
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REFRESH MATERIALIZED VIEW other_schema.mat_view;
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REFRESH MATERIALIZED VIEW other_schema.mat_view_2;
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\c - some_other_user
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SET search_path TO 'other_schema';
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-- test security definer funcs
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CREATE FUNCTION security_definer_in_files()
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RETURNS BOOLEAN AS $$
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DECLARE passed BOOLEAN;
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BEGIN
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SELECT count(*) > 0 INTO passed
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FROM (SELECT * FROM other_schema.dist_table ORDER BY a LIMIT 1) as foo,
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(SELECT * FROM other_schema.dist_table ORDER BY a LIMIT 1) as bar
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WHERE foo.a > bar.a;
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RETURN passed;
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END;
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$$ LANGUAGE plpgsql
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SECURITY DEFINER;
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SELECT security_definer_in_files();
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\c - postgres
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SET search_path TO 'other_schema';
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SELECT security_definer_in_files();
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CREATE FUNCTION security_definer_in_files_2()
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RETURNS BOOLEAN AS $$
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DECLARE passed BOOLEAN;
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BEGIN
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SELECT count(*) > 0 INTO passed
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FROM (SELECT * FROM other_schema.dist_table ORDER BY a LIMIT 1) as foo,
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(SELECT * FROM other_schema.dist_table ORDER BY a LIMIT 1) as bar
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WHERE foo.a > bar.a;
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RETURN passed;
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END;
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$$ LANGUAGE plpgsql
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SECURITY DEFINER;
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BEGIN;
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SELECT * FROM security_definer_in_files_2(), security_definer_in_files();
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SELECT * FROM security_definer_in_files_2(), security_definer_in_files();
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COMMIT;
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-- cleanup
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SET client_min_messages TO ERROR;
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DROP SCHEMA other_schema CASCADE;
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DROP SCHEMA intermediate_results CASCADE;
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