mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-21 16:53:25 +02:00
pageinspect has occasionally failed on slow buildfarm members, with symptoms indicating that the expected effects of VACUUM FREEZE didn't happen. This is presumably because a background transaction such as auto-analyze was holding back global xmin. We can work around that by using a temp table in the test. Since commita7212be8b
, that will use an up-to-date cutoff xmin regardless of other processes. And pageinspect itself shouldn't really care whether the table is temp. Back-patch to v14. There would be no point in older branches without back-patchinga7212be8b
, which seems like more trouble than the problem is worth. Discussion: https://postgr.es/m/2892135.1668976646@sss.pgh.pa.us
101 lines
4.1 KiB
SQL
101 lines
4.1 KiB
SQL
CREATE EXTENSION pageinspect;
|
|
|
|
-- Use a temp table so that effects of VACUUM are predictable
|
|
CREATE TEMP TABLE test1 (a int, b int);
|
|
INSERT INTO test1 VALUES (16777217, 131584);
|
|
|
|
VACUUM (DISABLE_PAGE_SKIPPING) test1; -- set up FSM
|
|
|
|
-- The page contents can vary, so just test that it can be read
|
|
-- successfully, but don't keep the output.
|
|
|
|
SELECT octet_length(get_raw_page('test1', 'main', 0)) AS main_0;
|
|
SELECT octet_length(get_raw_page('test1', 'main', 1)) AS main_1;
|
|
|
|
SELECT octet_length(get_raw_page('test1', 'fsm', 0)) AS fsm_0;
|
|
SELECT octet_length(get_raw_page('test1', 'fsm', 1)) AS fsm_1;
|
|
|
|
SELECT octet_length(get_raw_page('test1', 'vm', 0)) AS vm_0;
|
|
SELECT octet_length(get_raw_page('test1', 'vm', 1)) AS vm_1;
|
|
|
|
SELECT octet_length(get_raw_page('test1', 'main', -1));
|
|
SELECT octet_length(get_raw_page('xxx', 'main', 0));
|
|
SELECT octet_length(get_raw_page('test1', 'xxx', 0));
|
|
|
|
SELECT get_raw_page('test1', 0) = get_raw_page('test1', 'main', 0);
|
|
|
|
SELECT pagesize, version FROM page_header(get_raw_page('test1', 0));
|
|
|
|
SELECT page_checksum(get_raw_page('test1', 0), 0) IS NOT NULL AS silly_checksum_test;
|
|
SELECT page_checksum(get_raw_page('test1', 0), -1);
|
|
|
|
SELECT tuple_data_split('test1'::regclass, t_data, t_infomask, t_infomask2, t_bits)
|
|
FROM heap_page_items(get_raw_page('test1', 0));
|
|
|
|
SELECT * FROM fsm_page_contents(get_raw_page('test1', 'fsm', 0));
|
|
|
|
-- If we freeze the only tuple on test1, the infomask should
|
|
-- always be the same in all test runs.
|
|
VACUUM (FREEZE, DISABLE_PAGE_SKIPPING) test1;
|
|
|
|
SELECT t_infomask, t_infomask2, raw_flags, combined_flags
|
|
FROM heap_page_items(get_raw_page('test1', 0)),
|
|
LATERAL heap_tuple_infomask_flags(t_infomask, t_infomask2);
|
|
|
|
-- tests for decoding of combined flags
|
|
-- HEAP_XMAX_SHR_LOCK = (HEAP_XMAX_EXCL_LOCK | HEAP_XMAX_KEYSHR_LOCK)
|
|
SELECT * FROM heap_tuple_infomask_flags(x'0050'::int, 0);
|
|
-- HEAP_XMIN_FROZEN = (HEAP_XMIN_COMMITTED | HEAP_XMIN_INVALID)
|
|
SELECT * FROM heap_tuple_infomask_flags(x'0300'::int, 0);
|
|
-- HEAP_MOVED = (HEAP_MOVED_IN | HEAP_MOVED_OFF)
|
|
SELECT * FROM heap_tuple_infomask_flags(x'C000'::int, 0);
|
|
SELECT * FROM heap_tuple_infomask_flags(x'C000'::int, 0);
|
|
|
|
-- test all flags of t_infomask and t_infomask2
|
|
SELECT unnest(raw_flags)
|
|
FROM heap_tuple_infomask_flags(x'FFFF'::int, x'FFFF'::int) ORDER BY 1;
|
|
SELECT unnest(combined_flags)
|
|
FROM heap_tuple_infomask_flags(x'FFFF'::int, x'FFFF'::int) ORDER BY 1;
|
|
|
|
-- no flags at all
|
|
SELECT * FROM heap_tuple_infomask_flags(0, 0);
|
|
-- no combined flags
|
|
SELECT * FROM heap_tuple_infomask_flags(x'0010'::int, 0);
|
|
|
|
DROP TABLE test1;
|
|
|
|
-- check that using any of these functions with a partitioned table or index
|
|
-- would fail
|
|
create table test_partitioned (a int) partition by range (a);
|
|
create index test_partitioned_index on test_partitioned (a);
|
|
select get_raw_page('test_partitioned', 0); -- error about partitioned table
|
|
select get_raw_page('test_partitioned_index', 0); -- error about partitioned index
|
|
|
|
-- a regular table which is a member of a partition set should work though
|
|
create table test_part1 partition of test_partitioned for values from ( 1 ) to (100);
|
|
select get_raw_page('test_part1', 0); -- get farther and error about empty table
|
|
drop table test_partitioned;
|
|
|
|
-- check null bitmap alignment for table whose number of attributes is multiple of 8
|
|
create table test8 (f1 int, f2 int, f3 int, f4 int, f5 int, f6 int, f7 int, f8 int);
|
|
insert into test8(f1, f8) values (x'7f00007f'::int, 0);
|
|
select t_bits, t_data from heap_page_items(get_raw_page('test8', 0));
|
|
select tuple_data_split('test8'::regclass, t_data, t_infomask, t_infomask2, t_bits)
|
|
from heap_page_items(get_raw_page('test8', 0));
|
|
drop table test8;
|
|
|
|
-- Failure with incorrect page size
|
|
-- Suppress the DETAIL message, to allow the tests to work across various
|
|
-- page sizes.
|
|
\set VERBOSITY terse
|
|
SELECT fsm_page_contents('aaa'::bytea);
|
|
SELECT page_checksum('bbb'::bytea, 0);
|
|
SELECT page_header('ccc'::bytea);
|
|
\set VERBOSITY default
|
|
|
|
-- Tests with all-zero pages.
|
|
SHOW block_size \gset
|
|
SELECT fsm_page_contents(decode(repeat('00', :block_size), 'hex'));
|
|
SELECT page_header(decode(repeat('00', :block_size), 'hex'));
|
|
SELECT page_checksum(decode(repeat('00', :block_size), 'hex'), 1);
|