mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2025-03-01 19:45:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Revert test added by commit d207038053.

Browse Source 
This test was trying to test the mechanism to release kernel FDs as needed
to get us under the max_safe_fds limit in case of spill files.  To do that,
it needs to set max_files_per_process to a very low value which doesn't
even permit starting of the server in the case when there are a few already
opened files.  This test also won't work on platforms where we use one FD
per semaphore.

Backpatch-through: 10, till where this test was added
Discussion:
https://postgr.es/m/CAA4eK1LHhERi06Q+MmP9qBXBBboi+7WV3910J0aUgz71LcnKAw@mail.gmail.com
https://postgr.es/m/6485.1578583522@sss.pgh.pa.us
This commit is contained in:
Amit Kapila 2020-01-11 10:24:48 +05:30
parent 7f380c59f8
commit ed7bb5c311
1 changed files with 1 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
src/test/recovery/t/006_logical_decoding.pl
View File

@ -7,7 +7,7 @@ use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 11;
use Test::More tests => 10;
use Config;
# Initialize master node
@ -135,43 +135,5 @@ is($node_master->psql('postgres', 'DROP DATABASE otherdb'),
is($node_master->slot('otherdb_slot')->{'slot_name'},
undef, 'logical slot was actually dropped with DB');
# Test to ensure that we don't run out of file descriptors even if there
# are more spill files than maxAllocatedDescs.
# Set max_files_per_process to a small value to make it more likely to run out
# of max open file descriptors.
$node_master->safe_psql('postgres',
'ALTER SYSTEM SET max_files_per_process = 26;');
$node_master->restart;
$node_master->safe_psql(
'postgres', q{
do $$
BEGIN
FOR i IN 1..10 LOOP
BEGIN
INSERT INTO decoding_test(x) SELECT generate_series(1,5000);
EXCEPTION
when division_by_zero then perform 'dummy';
END;
END LOOP;
END $$;
});
$result = $node_master->safe_psql('postgres',
qq[
set logical_decoding_work_mem to 64; -- generate plenty of .spill files
SELECT data from pg_logical_slot_get_changes('test_slot', NULL, NULL)
WHERE data LIKE '%INSERT%' ORDER BY lsn LIMIT 1;
]);
$expected = q{table public.decoding_test: INSERT: x[integer]:1 y[text]:null};
is($result, $expected, 'got expected output from spilling subxacts session');
# Reset back max_files_per_process
$node_master->safe_psql('postgres',
'ALTER SYSTEM SET max_files_per_process = DEFAULT;');
$node_master->restart;
# done with the node
$node_master->stop;