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70d1c664f4
I managed to break this test in two different ways in commit 05036a3155. First, the output of the new call to tuple_data_split() on the test sequence is dependent on endianness. This is fixed by setting a special start value for the test sequence that produces the same output regardless of the endianness of the machine. Second, on versions older than v15, the new test case fails under "force_parallel_mode = regress" with the following error: ERROR: cannot access temporary tables during a parallel operation This is because pageinspect's disk-accessing functions are incorrectly marked PARALLEL SAFE on versions older than v15 (see commit aeaaf520f4 for details). This one is fixed by changing the test sequence to be permanent. The only reason it was previously marked temporary was to avoid needing a DROP SEQUENCE command at the end of the test. Unlike some other tests in this file, the use of a permanent sequence here shouldn't result in any test instability like what was fixed by commit e2933a6e11. Reviewed-by: Tom Lane Discussion: https://postgr.es/m/ZuOKOut5hhDlf_bP%40nathan Backpatch-through: 12
252 lines
8.1 KiB
Plaintext
252 lines
8.1 KiB
Plaintext
CREATE EXTENSION pageinspect;
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-- Use a temp table so that effects of VACUUM are predictable
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CREATE TEMP TABLE test1 (a int, b int);
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INSERT INTO test1 VALUES (16777217, 131584);
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VACUUM (DISABLE_PAGE_SKIPPING) test1; -- set up FSM
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-- The page contents can vary, so just test that it can be read
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-- successfully, but don't keep the output.
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SELECT octet_length(get_raw_page('test1', 'main', 0)) AS main_0;
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main_0
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--------
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8192
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(1 row)
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SELECT octet_length(get_raw_page('test1', 'main', 1)) AS main_1;
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ERROR: block number 1 is out of range for relation "test1"
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SELECT octet_length(get_raw_page('test1', 'fsm', 0)) AS fsm_0;
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fsm_0
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-------
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8192
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(1 row)
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SELECT octet_length(get_raw_page('test1', 'fsm', 1)) AS fsm_1;
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fsm_1
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-------
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8192
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(1 row)
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SELECT octet_length(get_raw_page('test1', 'vm', 0)) AS vm_0;
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vm_0
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------
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8192
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(1 row)
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SELECT octet_length(get_raw_page('test1', 'vm', 1)) AS vm_1;
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ERROR: block number 1 is out of range for relation "test1"
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SELECT octet_length(get_raw_page('test1', 'main', -1));
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ERROR: invalid block number
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SELECT octet_length(get_raw_page('xxx', 'main', 0));
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ERROR: relation "xxx" does not exist
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SELECT octet_length(get_raw_page('test1', 'xxx', 0));
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ERROR: invalid fork name
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HINT: Valid fork names are "main", "fsm", "vm", and "init".
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SELECT get_raw_page('test1', 0) = get_raw_page('test1', 'main', 0);
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?column?
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----------
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t
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(1 row)
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SELECT pagesize, version FROM page_header(get_raw_page('test1', 0));
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pagesize | version
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----------+---------
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8192 | 4
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(1 row)
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SELECT page_checksum(get_raw_page('test1', 0), 0) IS NOT NULL AS silly_checksum_test;
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silly_checksum_test
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---------------------
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t
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(1 row)
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SELECT page_checksum(get_raw_page('test1', 0), -1);
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ERROR: invalid block number
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SELECT tuple_data_split('test1'::regclass, t_data, t_infomask, t_infomask2, t_bits)
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FROM heap_page_items(get_raw_page('test1', 0));
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tuple_data_split
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-------------------------------
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{"\\x01000001","\\x00020200"}
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(1 row)
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SELECT * FROM fsm_page_contents(get_raw_page('test1', 'fsm', 0));
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fsm_page_contents
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-------------------
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0: 254 +
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1: 254 +
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3: 254 +
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7: 254 +
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15: 254 +
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31: 254 +
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63: 254 +
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127: 254 +
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255: 254 +
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511: 254 +
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1023: 254 +
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2047: 254 +
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4095: 254 +
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fp_next_slot: 0 +
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(1 row)
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-- If we freeze the only tuple on test1, the infomask should
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-- always be the same in all test runs.
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VACUUM (FREEZE, DISABLE_PAGE_SKIPPING) test1;
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SELECT t_infomask, t_infomask2, raw_flags, combined_flags
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FROM heap_page_items(get_raw_page('test1', 0)),
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LATERAL heap_tuple_infomask_flags(t_infomask, t_infomask2);
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t_infomask | t_infomask2 | raw_flags | combined_flags
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------------+-------------+-----------------------------------------------------------+--------------------
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2816 | 2 | {HEAP_XMIN_COMMITTED,HEAP_XMIN_INVALID,HEAP_XMAX_INVALID} | {HEAP_XMIN_FROZEN}
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(1 row)
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-- tests for decoding of combined flags
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-- HEAP_XMAX_SHR_LOCK = (HEAP_XMAX_EXCL_LOCK | HEAP_XMAX_KEYSHR_LOCK)
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SELECT * FROM heap_tuple_infomask_flags(x'0050'::int, 0);
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raw_flags | combined_flags
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---------------------------------------------+----------------------
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{HEAP_XMAX_KEYSHR_LOCK,HEAP_XMAX_EXCL_LOCK} | {HEAP_XMAX_SHR_LOCK}
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(1 row)
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-- HEAP_XMIN_FROZEN = (HEAP_XMIN_COMMITTED | HEAP_XMIN_INVALID)
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SELECT * FROM heap_tuple_infomask_flags(x'0300'::int, 0);
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raw_flags | combined_flags
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-----------------------------------------+--------------------
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{HEAP_XMIN_COMMITTED,HEAP_XMIN_INVALID} | {HEAP_XMIN_FROZEN}
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(1 row)
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-- HEAP_MOVED = (HEAP_MOVED_IN | HEAP_MOVED_OFF)
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SELECT * FROM heap_tuple_infomask_flags(x'C000'::int, 0);
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raw_flags | combined_flags
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--------------------------------+----------------
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{HEAP_MOVED_OFF,HEAP_MOVED_IN} | {HEAP_MOVED}
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(1 row)
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SELECT * FROM heap_tuple_infomask_flags(x'C000'::int, 0);
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raw_flags | combined_flags
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--------------------------------+----------------
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{HEAP_MOVED_OFF,HEAP_MOVED_IN} | {HEAP_MOVED}
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(1 row)
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-- test all flags of t_infomask and t_infomask2
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SELECT unnest(raw_flags)
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FROM heap_tuple_infomask_flags(x'FFFF'::int, x'FFFF'::int) ORDER BY 1;
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unnest
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-----------------------
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HEAP_COMBOCID
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HEAP_HASEXTERNAL
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HEAP_HASNULL
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HEAP_HASOID_OLD
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HEAP_HASVARWIDTH
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HEAP_HOT_UPDATED
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HEAP_KEYS_UPDATED
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HEAP_MOVED_IN
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HEAP_MOVED_OFF
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HEAP_ONLY_TUPLE
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HEAP_UPDATED
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HEAP_XMAX_COMMITTED
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HEAP_XMAX_EXCL_LOCK
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HEAP_XMAX_INVALID
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HEAP_XMAX_IS_MULTI
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HEAP_XMAX_KEYSHR_LOCK
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HEAP_XMAX_LOCK_ONLY
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HEAP_XMIN_COMMITTED
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HEAP_XMIN_INVALID
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(19 rows)
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SELECT unnest(combined_flags)
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FROM heap_tuple_infomask_flags(x'FFFF'::int, x'FFFF'::int) ORDER BY 1;
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unnest
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--------------------
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HEAP_MOVED
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HEAP_XMAX_SHR_LOCK
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HEAP_XMIN_FROZEN
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(3 rows)
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-- no flags at all
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SELECT * FROM heap_tuple_infomask_flags(0, 0);
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raw_flags | combined_flags
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-----------+----------------
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{} | {}
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(1 row)
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-- no combined flags
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SELECT * FROM heap_tuple_infomask_flags(x'0010'::int, 0);
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raw_flags | combined_flags
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-------------------------+----------------
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{HEAP_XMAX_KEYSHR_LOCK} | {}
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(1 row)
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DROP TABLE test1;
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-- check that using any of these functions with a partitioned table or index
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-- would fail
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create table test_partitioned (a int) partition by range (a);
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create index test_partitioned_index on test_partitioned (a);
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select get_raw_page('test_partitioned', 0); -- error about partitioned table
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ERROR: cannot get raw page from relation "test_partitioned"
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DETAIL: This operation is not supported for partitioned tables.
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select get_raw_page('test_partitioned_index', 0); -- error about partitioned index
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ERROR: cannot get raw page from relation "test_partitioned_index"
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DETAIL: This operation is not supported for partitioned indexes.
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-- a regular table which is a member of a partition set should work though
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create table test_part1 partition of test_partitioned for values from ( 1 ) to (100);
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select get_raw_page('test_part1', 0); -- get farther and error about empty table
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ERROR: block number 0 is out of range for relation "test_part1"
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drop table test_partitioned;
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-- check null bitmap alignment for table whose number of attributes is multiple of 8
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create table test8 (f1 int, f2 int, f3 int, f4 int, f5 int, f6 int, f7 int, f8 int);
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insert into test8(f1, f8) values (x'7f00007f'::int, 0);
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select t_bits, t_data from heap_page_items(get_raw_page('test8', 0));
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t_bits | t_data
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----------+--------------------
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10000001 | \x7f00007f00000000
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(1 row)
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select tuple_data_split('test8'::regclass, t_data, t_infomask, t_infomask2, t_bits)
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from heap_page_items(get_raw_page('test8', 0));
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tuple_data_split
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-------------------------------------------------------------
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{"\\x7f00007f",NULL,NULL,NULL,NULL,NULL,NULL,"\\x00000000"}
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(1 row)
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drop table test8;
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-- Failure with incorrect page size
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-- Suppress the DETAIL message, to allow the tests to work across various
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-- page sizes.
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\set VERBOSITY terse
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SELECT fsm_page_contents('aaa'::bytea);
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ERROR: invalid page size
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SELECT page_checksum('bbb'::bytea, 0);
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ERROR: invalid page size
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SELECT page_header('ccc'::bytea);
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ERROR: invalid page size
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\set VERBOSITY default
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-- Tests with all-zero pages.
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SHOW block_size \gset
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SELECT fsm_page_contents(decode(repeat('00', :block_size), 'hex'));
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fsm_page_contents
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-------------------
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(1 row)
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SELECT page_header(decode(repeat('00', :block_size), 'hex'));
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page_header
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-----------------------
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(0/0,0,0,0,0,0,0,0,0)
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(1 row)
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SELECT page_checksum(decode(repeat('00', :block_size), 'hex'), 1);
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page_checksum
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---------------
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(1 row)
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-- tests for sequences
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create sequence test_sequence start 72057594037927937;
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select tuple_data_split('test_sequence'::regclass, t_data, t_infomask, t_infomask2, t_bits)
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from heap_page_items(get_raw_page('test_sequence', 0));
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tuple_data_split
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-------------------------------------------------------
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{"\\x0100000000000001","\\x0000000000000000","\\x00"}
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(1 row)
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drop sequence test_sequence;
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