mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-23 13:50:40 +02:00
The regression tests for contrib/test_decoding regularly failed on postgres instances that were very slow. Either because the hardware itself was slow or because very expensive debugging options like CLOBBER_CACHE_ALWAYS were used. The reason they failed was just that some additional transactions were decoded. Analyze and vacuum, triggered by autovac. To fix just add a option to test_decoding to only display transactions in which a change was actually displayed. That's not pretty because it removes information from the tests; but better than constantly failing tests in very likely harmless ways. Backpatch to 9.4 where logical decoding was introduced. Discussion: 20140629142511.GA26930@awork2.anarazel.de
75 lines
2.3 KiB
Plaintext
75 lines
2.3 KiB
Plaintext
-- predictability
|
|
SET synchronous_commit = on;
|
|
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
|
|
?column?
|
|
----------
|
|
init
|
|
(1 row)
|
|
|
|
CREATE TABLE test_prepared1(id int);
|
|
CREATE TABLE test_prepared2(id int);
|
|
-- test simple successful use of a prepared xact
|
|
BEGIN;
|
|
INSERT INTO test_prepared1 VALUES (1);
|
|
PREPARE TRANSACTION 'test_prepared#1';
|
|
COMMIT PREPARED 'test_prepared#1';
|
|
INSERT INTO test_prepared1 VALUES (2);
|
|
-- test abort of a prepared xact
|
|
BEGIN;
|
|
INSERT INTO test_prepared1 VALUES (3);
|
|
PREPARE TRANSACTION 'test_prepared#2';
|
|
ROLLBACK PREPARED 'test_prepared#2';
|
|
INSERT INTO test_prepared1 VALUES (4);
|
|
-- test prepared xact containing ddl
|
|
BEGIN;
|
|
INSERT INTO test_prepared1 VALUES (5);
|
|
ALTER TABLE test_prepared1 ADD COLUMN data text;
|
|
INSERT INTO test_prepared1 VALUES (6, 'frakbar');
|
|
PREPARE TRANSACTION 'test_prepared#3';
|
|
-- test that we decode correctly while an uncommitted prepared xact
|
|
-- with ddl exists.
|
|
-- separate table because of the lock from the ALTER
|
|
-- this will come before the '5' row above, as this commits before it.
|
|
INSERT INTO test_prepared2 VALUES (7);
|
|
COMMIT PREPARED 'test_prepared#3';
|
|
-- make sure stuff still works
|
|
INSERT INTO test_prepared1 VALUES (8);
|
|
INSERT INTO test_prepared2 VALUES (9);
|
|
-- cleanup
|
|
DROP TABLE test_prepared1;
|
|
DROP TABLE test_prepared2;
|
|
-- show results
|
|
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
data
|
|
-------------------------------------------------------------------------
|
|
BEGIN
|
|
table public.test_prepared1: INSERT: id[integer]:1
|
|
COMMIT
|
|
BEGIN
|
|
table public.test_prepared1: INSERT: id[integer]:2
|
|
COMMIT
|
|
BEGIN
|
|
table public.test_prepared1: INSERT: id[integer]:4
|
|
COMMIT
|
|
BEGIN
|
|
table public.test_prepared2: INSERT: id[integer]:7
|
|
COMMIT
|
|
BEGIN
|
|
table public.test_prepared1: INSERT: id[integer]:5
|
|
table public.test_prepared1: INSERT: id[integer]:6 data[text]:'frakbar'
|
|
COMMIT
|
|
BEGIN
|
|
table public.test_prepared1: INSERT: id[integer]:8 data[text]:null
|
|
COMMIT
|
|
BEGIN
|
|
table public.test_prepared2: INSERT: id[integer]:9
|
|
COMMIT
|
|
(22 rows)
|
|
|
|
SELECT pg_drop_replication_slot('regression_slot');
|
|
pg_drop_replication_slot
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|