mirror of
https://github.com/postgres/postgres.git
synced 2025-10-25 13:17:41 +03:00
2c7ea57e56
This reverts a sequence of commits, implementing features related to logical decoding and replication of sequences: -0da92dc530-80901b3291-b779d7d8fd-d5ed9da41d-a180c2b34d-75b1521dae-2d2232933b-002c9dd97a-05843b1aa4The implementation has issues, mostly due to combining transactional and non-transactional behavior of sequences. It's not clear how this could be fixed, but it'll require reworking significant part of the patch. Discussion: https://postgr.es/m/95345a19-d508-63d1-860a-f5c2f41e8d40@enterprisedb.com
88 lines
2.3 KiB
Plaintext
88 lines
2.3 KiB
Plaintext
-- predictability
|
|
SET synchronous_commit = on;
|
|
-- fail because we're creating a slot while in an xact with xid
|
|
BEGIN;
|
|
SELECT pg_current_xact_id() = '0';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
|
|
ERROR: cannot create logical replication slot in transaction that has performed writes
|
|
ROLLBACK;
|
|
-- fail because we're creating a slot while in a subxact whose topxact has an xid
|
|
BEGIN;
|
|
SELECT pg_current_xact_id() = '0';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SAVEPOINT barf;
|
|
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
|
|
ERROR: cannot create logical replication slot in transaction that has performed writes
|
|
ROLLBACK TO SAVEPOINT barf;
|
|
ROLLBACK;
|
|
-- succeed, outside tx.
|
|
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
|
|
?column?
|
|
----------
|
|
init
|
|
(1 row)
|
|
|
|
SELECT 'stop' FROM pg_drop_replication_slot('regression_slot');
|
|
?column?
|
|
----------
|
|
stop
|
|
(1 row)
|
|
|
|
-- succeed, in tx without xid.
|
|
BEGIN;
|
|
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
|
|
?column?
|
|
----------
|
|
init
|
|
(1 row)
|
|
|
|
COMMIT;
|
|
CREATE TABLE nobarf(id serial primary key, data text);
|
|
INSERT INTO nobarf(data) VALUES('1');
|
|
-- decoding works in transaction with xid
|
|
BEGIN;
|
|
SELECT pg_current_xact_id() = '0';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
-- don't show yet, haven't committed
|
|
INSERT INTO nobarf(data) VALUES('2');
|
|
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
data
|
|
-----------------------------------------------------------
|
|
BEGIN
|
|
table public.nobarf: INSERT: id[integer]:1 data[text]:'1'
|
|
COMMIT
|
|
(3 rows)
|
|
|
|
COMMIT;
|
|
INSERT INTO nobarf(data) VALUES('3');
|
|
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
|
|
data
|
|
-----------------------------------------------------------
|
|
BEGIN
|
|
table public.nobarf: INSERT: id[integer]:2 data[text]:'2'
|
|
COMMIT
|
|
BEGIN
|
|
table public.nobarf: INSERT: id[integer]:3 data[text]:'3'
|
|
COMMIT
|
|
(6 rows)
|
|
|
|
SELECT 'stop' FROM pg_drop_replication_slot('regression_slot');
|
|
?column?
|
|
----------
|
|
stop
|
|
(1 row)
|
|
|