1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
-- like bt_index_check('pglogical.sequence_state', true)
CREATE FUNCTION heapallindexed() RETURNS void AS $$
DECLARE
count_seqscan int;
count_idxscan int;
BEGIN
count_seqscan := (SELECT count(*) FROM pglogical.sequence_state);
SET enable_seqscan = off;
count_idxscan := (SELECT count(*) FROM pglogical.sequence_state);
RESET enable_seqscan;
IF count_seqscan <> count_idxscan THEN
RAISE 'seqscan found % rows, but idxscan found % rows',
count_seqscan, count_idxscan;
END IF;
END
$$ LANGUAGE plpgsql;
-- Replicate one sequence.
CREATE SEQUENCE stress;
SELECT * FROM pglogical.create_replication_set('stress_seq');
SELECT * FROM pglogical.replication_set_add_sequence('stress_seq', 'stress');
SELECT pglogical.synchronize_sequence('stress');
SELECT heapallindexed();
-- Sync it 400 times in one transaction, to cross a pglogical.sequence_state
-- page boundary and get a non-HOT update.
DO $$
BEGIN
FOR i IN 1..400 LOOP
PERFORM pglogical.synchronize_sequence('stress');
END LOOP;
END;
$$;
SELECT heapallindexed();
|
