BUG #12324: database's age less then max(relAGE) , and stream standby diff with master
| От | digoal@126.com |
|---|---|
| Тема | BUG #12324: database's age less then max(relAGE) , and stream standby diff with master |
| Дата | |
| Msg-id | 20141224035808.11503.56425@wrigleys.postgresql.org обсуждение исходный текст |
| Ответы |
Re: BUG #12324: database's age less then max(relAGE) , and
stream standby diff with master
|
| Список | pgsql-bugs |
The following bug has been logged on the website:
Bug reference: 12324
Logged by: digoal
Email address: digoal@126.com
PostgreSQL version: 9.0.3
Operating system: CentOS 5.7 x64
Description:
In a suspected 9.0.3 version bugs? there's no way to reproduce it.
Environment, PG stream replication.
primary: PostgreSQL 9.0.3
standby: PostgreSQL 9.0.3
Access to the data of a certain table do not match the primary node and the
standby node.
The master node 27 has records
digoal=> select * from xxxx where xxx =618;
id | xxx | xxx | create_time | sort_order | push_end_time |
push_start_time | hot
------+-------------+--------------+-------------------------+------------+---------------+-----------------+-----
6711 | 261 | 618 | 2014-12-16 16:42:19.866 | 22 |
24:00 | 00:00 | 0
6712 | 37 | 618 | 2014-12-16 16:42:19.881 | 21 |
24:00 | 00:00 | 0
6713 | 210 | 618 | 2014-12-16 16:42:19.898 | 20 |
24:00 | 00:00 | 0
6714 | 222 | 618 | 2014-12-16 16:42:19.913 | 19 |
24:00 | 00:00 | 0
6715 | 190 | 618 | 2014-12-16 16:42:19.929 | 18 |
24:00 | 00:00 | 0
6716 | 184 | 618 | 2014-12-16 16:42:19.944 | 17 |
24:00 | 00:00 | 0
6717 | 182 | 618 | 2014-12-16 16:42:19.959 | 16 |
24:00 | 00:00 | 0
6718 | 157 | 618 | 2014-12-16 16:42:19.977 | 15 |
24:00 | 00:00 | 0
6719 | 293 | 618 | 2014-12-16 16:42:19.995 | 14 |
24:00 | 00:00 | 0
6721 | 297 | 618 | 2014-12-16 16:42:20.027 | 12 |
24:00 | 00:00 | 0
6722 | 171 | 618 | 2014-12-16 16:42:20.044 | 11 |
24:00 | 00:00 | 0
6723 | 243 | 618 | 2014-12-16 16:42:20.065 | 10 |
24:00 | 00:00 | 0
6724 | 318 | 618 | 2014-12-16 16:42:20.08 | 9 |
24:00 | 00:00 | 0
6725 | 232 | 618 | 2014-12-16 16:42:20.096 | 8 |
24:00 | 00:00 | 0
6726 | 254 | 618 | 2014-12-16 16:42:20.112 | 7 |
24:00 | 00:00 | 0
6727 | 307 | 618 | 2014-12-16 16:42:20.126 | 6 |
24:00 | 00:00 | 0
6728 | 181 | 618 | 2014-12-16 16:42:20.143 | 5 |
24:00 | 00:00 | 0
6729 | 294 | 618 | 2014-12-16 16:42:20.158 | 4 |
24:00 | 00:00 | 0
6730 | 327 | 618 | 2014-12-16 16:42:20.175 | 3 |
24:00 | 00:00 | 0
6731 | 309 | 618 | 2014-12-16 16:42:20.19 | 2 |
24:00 | 00:00 | 0
6706 | 50 | 618 | 2014-12-16 16:42:19.779 | 23 |
24:00 | 00:00 | 0
6705 | 281 | 618 | 2014-12-16 16:42:19.761 | 29 |
24:00 | 00:00 | 0
6707 | 300 | 618 | 2014-12-16 16:42:19.797 | 28 |
24:00 | 00:00 | 0
6709 | 204 | 618 | 2014-12-16 16:42:19.831 | 25 |
24:00 | 00:00 | 0
6710 | 308 | 618 | 2014-12-16 16:42:19.851 | 24 |
24:00 | 00:00 | 0
6708 | 195 | 618 | 2014-12-16 16:42:19.813 | 27 |
24:00 | 00:00 | 0
6720 | 229 | 618 | 2014-12-16 16:42:20.01 | 26 |
24:00 | 00:00 | 0
(27 rows)
There are 62 records for standby nodes
digoal=> select cmin,cmax,xmin,xmax,ctid,id from xxxx where xxx =618;
cmin | cmax | xmin | xmax | ctid | id
------+------+------------+------+----------+------
342 | 342 | 2582467777 | 0 | (23,58) | 6475
343 | 343 | 2582467777 | 0 | (23,59) | 6476
344 | 344 | 2582467777 | 0 | (23,60) | 6477
345 | 345 | 2582467777 | 0 | (23,61) | 6478
346 | 346 | 2582467777 | 0 | (23,62) | 6479
347 | 347 | 2582467777 | 0 | (23,63) | 6480
348 | 348 | 2582467777 | 0 | (23,64) | 6481
349 | 349 | 2582467777 | 0 | (23,65) | 6482
350 | 350 | 2582467777 | 0 | (23,66) | 6483
351 | 351 | 2582467777 | 0 | (23,67) | 6484
352 | 352 | 2582467777 | 0 | (23,68) | 6485
353 | 353 | 2582467777 | 0 | (23,69) | 6486
354 | 354 | 2582467777 | 0 | (23,70) | 6487
355 | 355 | 2582467777 | 0 | (23,71) | 6488
356 | 356 | 2582467777 | 0 | (23,72) | 6489
357 | 357 | 2582467777 | 0 | (23,73) | 6490
358 | 358 | 2582467777 | 0 | (23,75) | 6491
359 | 359 | 2582467777 | 0 | (23,76) | 6492
360 | 360 | 2582467777 | 0 | (23,77) | 6493
361 | 361 | 2582467777 | 0 | (23,79) | 6494
362 | 362 | 2582467777 | 0 | (23,80) | 6495
363 | 363 | 2582467777 | 0 | (23,81) | 6496
364 | 364 | 2582467777 | 0 | (23,82) | 6497
365 | 365 | 2582467777 | 0 | (23,83) | 6498
366 | 366 | 2582467777 | 0 | (23,84) | 6499
367 | 367 | 2582467777 | 0 | (23,85) | 6500
368 | 368 | 2582467777 | 0 | (23,86) | 6501
369 | 369 | 2582467777 | 0 | (23,87) | 6502
370 | 370 | 2582467777 | 0 | (23,88) | 6503
371 | 371 | 2582467777 | 0 | (23,89) | 6504
372 | 372 | 2582467777 | 0 | (23,90) | 6505
373 | 373 | 2582467777 | 0 | (23,91) | 6506
374 | 374 | 2582467777 | 0 | (23,92) | 6507
375 | 375 | 2582467777 | 0 | (23,94) | 6508
376 | 376 | 2582467777 | 0 | (23,95) | 6509
250 | 250 | 2907809296 | 0 | (28,37) | 6711
251 | 251 | 2907809296 | 0 | (28,38) | 6712
252 | 252 | 2907809296 | 0 | (28,39) | 6713
253 | 253 | 2907809296 | 0 | (28,40) | 6714
254 | 254 | 2907809296 | 0 | (28,41) | 6715
255 | 255 | 2907809296 | 0 | (28,42) | 6716
256 | 256 | 2907809296 | 0 | (28,43) | 6717
257 | 257 | 2907809296 | 0 | (28,44) | 6718
258 | 258 | 2907809296 | 0 | (28,47) | 6719
260 | 260 | 2907809296 | 0 | (28,49) | 6721
261 | 261 | 2907809296 | 0 | (28,54) | 6722
262 | 262 | 2907809296 | 0 | (28,55) | 6723
263 | 263 | 2907809296 | 0 | (28,56) | 6724
264 | 264 | 2907809296 | 0 | (28,57) | 6725
265 | 265 | 2907809296 | 0 | (28,58) | 6726
266 | 266 | 2907809296 | 0 | (28,59) | 6727
267 | 267 | 2907809296 | 0 | (28,60) | 6728
268 | 268 | 2907809296 | 0 | (28,61) | 6729
269 | 269 | 2907809296 | 0 | (28,62) | 6730
270 | 270 | 2907809296 | 0 | (28,63) | 6731
1 | 1 | 2957409441 | 0 | (28,102) | 6706
0 | 0 | 2957411736 | 0 | (28,103) | 6705
0 | 0 | 2957411736 | 0 | (28,104) | 6707
0 | 0 | 2957409441 | 0 | (28,106) | 6709
0 | 0 | 2957409441 | 0 | (28,107) | 6710
0 | 0 | 2957411736 | 0 | (28,108) | 6708
1 | 1 | 2957411736 | 0 | (28,109) | 6720
(62 rows)
The preferred screening for node XLOG replay and the master node XLOG
location are consistent or close to.
For the node
postgres=# select pg_last_xlog_replay_location();
on standby
pg_last_xlog_replay_location
1521/95AF7FE8
(1 row)
on primary
postgres=# select pg_current_xlog_location();
pg_current_xlog_location
1521/95B4E000
(1 row)
Basic is consistent, because a query manually switch has time lag.
Then make sure no changes to the table.
There is no other reasons for Lord of standby data can be inconsistent with
primary, so is the BUG?
The next , I see database's age small then object's age in
pg_class.relfrozenxid
But this is obviously not normal.
postgres=# select max(age(datfrozenxid)) from pg_database ;
max
1486750538
(1 row)
digoal=> select max(age(relfrozenxid)) from pg_class ;
max
2147483647
(1 row)
On the table for a vacuum after full, primary and standby database data
consistent, returned to normal.
on primary.
digoal=> vacuum full xxxx ;
VACUUM
the cluster's
Vacuum database configuration:
#vacuum_freeze_min_age = 50000000
vacuum_freeze_table_age = 1100000000
autovacuum_freeze_max_age = 1500000000
The next thing to do is to manually perform some vacuum freeze.
> vacuumdb -a -F -z
Other info:
standby:
pg_control version number: 903
Catalog version number: 201008051
Database system identifier: 5574478509073467071
Database cluster state: in archive recovery
pg_control last modified: Wed 24 Dec 2014 10:55:30 AM CST
Latest checkpoint location: 1521/861BBA10
Prior checkpoint location: 1521/7C8EF3C0
Latest checkpoint's REDO location: 1521/81884898
Latest checkpoint's TimeLineID: 3
Latest checkpoint's NextXID: 2/3295971686
Latest checkpoint's NextOID: 168863593
Latest checkpoint's NextMultiXactId: 1
Latest checkpoint's NextMultiOffset: 0
Latest checkpoint's oldestXID: 1809653736
Latest checkpoint's oldestXID's DB: 164408906
Latest checkpoint's oldestActiveXID: 3295733772
Time of latest checkpoint: Wed 24 Dec 2014 10:50:10 AM CST
Minimum recovery ending location: 1521/92FAD1B8
Backup start location: 0/0
Current wal_level setting: hot_standby
Current max_connections setting: 2000
Current max_prepared_xacts setting: 0
Current max_locks_per_xact setting: 64
Maximum data alignment: 8
Database block size: 8192
Blocks per segment of large relation: 1048576
WAL block size: 8192
Bytes per WAL segment: 67108864
Maximum length of identifiers: 64
Maximum columns in an index: 32
Maximum size of a TOAST chunk: 1996
Date/time type storage: 64-bit integers
Float4 argument passing: by value
Float8 argument passing: by value
primary
pg_control version number: 903
Catalog version number: 201008051
Database system identifier: 5574478509073467071
Database cluster state: in production
pg_control last modified: Wed 24 Dec 2014 10:57:33 AM CST
Latest checkpoint location: 1521/8FEA1380
Prior checkpoint location: 1521/861BBA10
Latest checkpoint's REDO location: 1521/8AC9C518
Latest checkpoint's TimeLineID: 3
Latest checkpoint's NextXID: 2/3295971686
Latest checkpoint's NextOID: 168863593
Latest checkpoint's NextMultiXactId: 1
Latest checkpoint's NextMultiOffset: 0
Latest checkpoint's oldestXID: 1809653736
Latest checkpoint's oldestXID's DB: 164408906
Latest checkpoint's oldestActiveXID: 3295733772
Time of latest checkpoint: Wed 24 Dec 2014 10:55:10 AM CST
Minimum recovery ending location: 0/0
Backup start location: 0/0
Current wal_level setting: hot_standby
Current max_connections setting: 2000
Current max_prepared_xacts setting: 0
Current max_locks_per_xact setting: 64
Maximum data alignment: 8
Database block size: 8192
Blocks per segment of large relation: 1048576
WAL block size: 8192
Bytes per WAL segment: 67108864
Maximum length of identifiers: 64
Maximum columns in an index: 32
Maximum size of a TOAST chunk: 1996
Date/time type storage: 64-bit integers
Float4 argument passing: by value
Float8 argument passing: by value
Latest checkpoint's NextXID: 2/3298037243
select
txid_visible_in_snapshot((2*2^32+2582467777)::int8,txid_current_snapshot());
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