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e2a0ee6900
A little COLLATE "C" goes a long way. Pavel Stehule, per suggestion from Craig Ringer Discussion: <CAFj8pRA8nJZcozgxN=RMSqMmKuHVOkcGAAKPKdFeiMWGDSUDLA@mail.gmail.com>
180 lines
7.8 KiB
PL/PgSQL
180 lines
7.8 KiB
PL/PgSQL
-- predictability
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SET synchronous_commit = on;
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
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CREATE TABLE spill_test(data text);
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-- consume DDL
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SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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-- spilling main xact
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BEGIN;
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INSERT INTO spill_test SELECT 'serialize-topbig--1:'||g.i FROM generate_series(1, 5000) g(i);
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling subxact, nothing in main
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BEGIN;
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SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-subbig--1:'||g.i FROM generate_series(1, 5000) g(i);
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RELEASE SAVEPOINT s;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling subxact, spilling main xact
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BEGIN;
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SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-subbig-topbig--1:'||g.i FROM generate_series(1, 5000) g(i);
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RELEASE SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-subbig-topbig--2:'||g.i FROM generate_series(5001, 10000) g(i);
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling subxact, non-spilling main xact
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BEGIN;
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SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-subbig-topsmall--1:'||g.i FROM generate_series(1, 5000) g(i);
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RELEASE SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-subbig-topsmall--2:'||g.i FROM generate_series(5001, 5001) g(i);
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- not-spilling subxact, spilling main xact
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BEGIN;
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SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-subbig-topbig--1:'||g.i FROM generate_series(1, 5000) g(i);
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RELEASE SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-subbig-topbig--2:'||g.i FROM generate_series(5001, 10000) g(i);
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling main xact, spilling subxact
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BEGIN;
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INSERT INTO spill_test SELECT 'serialize-topbig-subbig--1:'||g.i FROM generate_series(1, 5000) g(i);
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SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-topbig-subbig--2:'||g.i FROM generate_series(5001, 10000) g(i);
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RELEASE SAVEPOINT s;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling main xact, not spilling subxact
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BEGIN;
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INSERT INTO spill_test SELECT 'serialize-topbig-subsmall--1:'||g.i FROM generate_series(1, 5000) g(i);
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SAVEPOINT s;
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INSERT INTO spill_test SELECT 'serialize-topbig-subsmall--2:'||g.i FROM generate_series(5001, 5001) g(i);
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RELEASE SAVEPOINT s;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling subxact, followed by another spilling subxact
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BEGIN;
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SAVEPOINT s1;
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INSERT INTO spill_test SELECT 'serialize-subbig-subbig--1:'||g.i FROM generate_series(1, 5000) g(i);
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RELEASE SAVEPOINT s1;
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SAVEPOINT s2;
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INSERT INTO spill_test SELECT 'serialize-subbig-subbig--2:'||g.i FROM generate_series(5001, 10000) g(i);
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RELEASE SAVEPOINT s2;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling subxact, followed by not spilling subxact
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BEGIN;
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SAVEPOINT s1;
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INSERT INTO spill_test SELECT 'serialize-subbig-subsmall--1:'||g.i FROM generate_series(1, 5000) g(i);
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RELEASE SAVEPOINT s1;
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SAVEPOINT s2;
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INSERT INTO spill_test SELECT 'serialize-subbig-subsmall--2:'||g.i FROM generate_series(5001, 5001) g(i);
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RELEASE SAVEPOINT s2;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4], COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- not spilling subxact, followed by spilling subxact
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BEGIN;
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SAVEPOINT s1;
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INSERT INTO spill_test SELECT 'serialize-subsmall-subbig--1:'||g.i FROM generate_series(1, 1) g(i);
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RELEASE SAVEPOINT s1;
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SAVEPOINT s2;
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INSERT INTO spill_test SELECT 'serialize-subsmall-subbig--2:'||g.i FROM generate_series(2, 5001) g(i);
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RELEASE SAVEPOINT s2;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4] COLLATE "C", COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling subxact, containing another spilling subxact
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BEGIN;
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SAVEPOINT s1;
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INSERT INTO spill_test SELECT 'serialize-nested-subbig-subbig--1:'||g.i FROM generate_series(1, 5000) g(i);
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SAVEPOINT s2;
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INSERT INTO spill_test SELECT 'serialize-nested-subbig-subbig--2:'||g.i FROM generate_series(5001, 10000) g(i);
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RELEASE SAVEPOINT s2;
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RELEASE SAVEPOINT s1;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4] COLLATE "C", COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- spilling subxact, containing a not spilling subxact
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BEGIN;
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SAVEPOINT s1;
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INSERT INTO spill_test SELECT 'serialize-nested-subbig-subsmall--1:'||g.i FROM generate_series(1, 5000) g(i);
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SAVEPOINT s2;
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INSERT INTO spill_test SELECT 'serialize-nested-subbig-subsmall--2:'||g.i FROM generate_series(5001, 5001) g(i);
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RELEASE SAVEPOINT s2;
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RELEASE SAVEPOINT s1;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4] COLLATE "C", COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- not spilling subxact, containing a spilling subxact
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BEGIN;
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SAVEPOINT s1;
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INSERT INTO spill_test SELECT 'serialize-nested-subsmall-subbig--1:'||g.i FROM generate_series(1, 1) g(i);
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SAVEPOINT s2;
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INSERT INTO spill_test SELECT 'serialize-nested-subsmall-subbig--2:'||g.i FROM generate_series(2, 5001) g(i);
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RELEASE SAVEPOINT s2;
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RELEASE SAVEPOINT s1;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4] COLLATE "C", COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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-- not spilling subxact, containing a spilling subxact that aborts and one that commits
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BEGIN;
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SAVEPOINT s1;
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INSERT INTO spill_test SELECT 'serialize-nested-subbig-subbigabort--1:'||g.i FROM generate_series(1, 5000) g(i);
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SAVEPOINT s2;
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INSERT INTO spill_test SELECT 'serialize-nested-subbig-subbigabort--2:'||g.i FROM generate_series(5001, 10000) g(i);
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ROLLBACK TO SAVEPOINT s2;
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SAVEPOINT s3;
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INSERT INTO spill_test SELECT 'serialize-nested-subbig-subbigabort-subbig-3:'||g.i FROM generate_series(5001, 10000) g(i);
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RELEASE SAVEPOINT s1;
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COMMIT;
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SELECT (regexp_split_to_array(data, ':'))[4] COLLATE "C", COUNT(*), (array_agg(data))[1], (array_agg(data))[count(*)]
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FROM pg_logical_slot_get_changes('regression_slot', NULL,NULL) WHERE data ~ 'INSERT'
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GROUP BY 1 ORDER BY 1;
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DROP TABLE spill_test;
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SELECT pg_drop_replication_slot('regression_slot');
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