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Alexander Korotkov 89f39736f4 Fix WAL format incompatibility introduced by backpatching of 52ac6cd2d0 
52ac6cd2d0 added new field to ginxlogDeletePage and was backpatched to 9.4.
That led to problems when patched postgres instance applies WAL records
generated by non-patched one.  WAL records generated by non-patched instance
don't contain new field, which patched one is expecting to see.

Thankfully, we can distinguish patched and non-patched WAL records by their data
size.  If we see that WAL record is generated by non-patched instance, we skip
processing of new field.  This commit comes with some assertions.  In
particular, if it appears that on some platform struct data size didn't change
then static assertion will trigger.

Reported-by: Simon Riggs
Discussion: https://postgr.es/m/CANP8%2Bj%2BK4whxf7ET7%2BgO%2BG-baC3-WxqqH%3DnV4X2CgfEPA3Yu3g%40mail.gmail.com
Author: Alexander Korotkov
Reviewed-by: Simon Riggs, Alvaro Herrera
Backpatch-through: 9.4
2019-03-24 15:26:45 +03:00
..
access Fix WAL format incompatibility introduced by backpatching of 52ac6cd2d0 2019-03-24 15:26:45 +03:00
bootstrap Rationalize handling of array type names in bootstrap data. 2018-04-17 18:29:11 -04:00
catalog Move CloneForeignKeyConstraints to tablecmds.c 2019-01-18 14:57:49 -03:00
commands Move CloneForeignKeyConstraints to tablecmds.c 2019-01-18 14:57:49 -03:00
common Remove support for tls-unique channel binding. 2018-08-05 13:44:26 +03:00
datatype Update copyright for 2018 2018-01-02 23:30:12 -05:00
executor Allow to reset execGrouping.c style tuple hashtables. 2019-02-09 01:05:50 -08:00
fe_utils Ensure schema qualification in pg_restore DISABLE/ENABLE TRIGGER commands. 2018-08-17 17:12:21 -04:00
foreign Allow insert and update tuple routing and COPY for foreign tables. 2018-04-06 19:22:03 -04:00
jit Fix LLVM related headers to compile standalone (to fix cpluspluscheck). 2019-01-28 18:14:45 -08:00
lib simplehash: Add support for resetting a hashtable's contents. 2019-02-09 01:05:50 -08:00
libpq Remove duplicate function declarations. 2018-08-14 14:25:14 -04:00
mb Fix a boatload of typos in C comments. 2018-04-01 15:01:28 -04:00
nodes Fix handling of targetlist SRFs when scan/join relation is known empty. 2019-03-07 14:21:52 -05:00
optimizer Avoid sharing PARAM_EXEC slots between different levels of NestLoop. 2019-01-11 15:54:08 -05:00
parser Fix INSERT ON CONFLICT UPDATE through a view that isn't just SELECT *. 2018-08-04 19:38:58 -04:00
partitioning Fix run-time partition pruning for appends with multiple source rels. 2018-08-01 19:42:53 -04:00
port Fix misc typos, mostly in comments. 2018-07-18 16:17:42 +03:00
portability Update copyright for 2018 2018-01-02 23:30:12 -05:00
postmaster Add comment explaining BGWORKER_BYPASS_ALLOWCONN 2018-04-23 10:31:22 +02:00
regex Update copyright for 2018 2018-01-02 23:30:12 -05:00
replication Fix memory leak in TRUNCATE decoding 2018-09-03 02:29:51 +02:00
rewrite Revert MERGE patch 2018-04-12 11:22:56 +01:00
snowball Update copyright for 2018 2018-01-02 23:30:12 -05:00
statistics Update copyright for 2018 2018-01-02 23:30:12 -05:00
storage PANIC on fsync() failure. 2018-11-19 13:37:59 +13:00
tcop Fix event triggers for partitioned tables 2018-10-06 19:17:46 -03:00
tsearch Post-feature-freeze pgindent run. 2018-04-26 14:47:16 -04:00
utils Fix missing role dependencies for some schema and type ACLs. 2018-11-09 20:42:03 -05:00
.gitignore Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
c.h Allow btree comparison functions to return INT_MIN. 2018-10-05 16:01:29 -04:00
fmgr.h Add expression compilation support to LLVM JIT provider. 2018-03-22 14:45:59 -07:00
funcapi.h Support INOUT arguments in procedures 2018-03-14 12:07:28 -04:00
getaddrinfo.h Update copyright for 2018 2018-01-02 23:30:12 -05:00
getopt_long.h Update copyright for 2018 2018-01-02 23:30:12 -05:00
Makefile Install JIT related headers. 2019-01-28 13:53:43 -08:00
miscadmin.h Allow group access on PGDATA 2018-04-07 17:45:39 -04:00
pg_config.h.in Avoid thread-safety problem in ecpglib. 2019-01-21 23:18:58 -05:00
pg_config.h.win32 Stamp 11.2. 2019-02-11 16:17:27 -05:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_ext.h.win32 Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Improve description of DEFAULT_XLOG_SEG_SIZE in pg_config.h 2018-12-29 08:24:47 +09:00
pg_getopt.h Use our own getopt() on OpenBSD. 2019-01-18 15:06:26 -05:00
pg_trace.h Update copyright for 2018 2018-01-02 23:30:12 -05:00
pgstat.h Revert "Allow on-line enabling and disabling of data checksums" 2018-04-09 19:03:42 +02:00
pgtar.h Update copyright for 2018 2018-01-02 23:30:12 -05:00
pgtime.h Update copyright for 2018 2018-01-02 23:30:12 -05:00
port.h Fix misc typos in comments. 2019-01-23 13:43:41 +02:00
postgres.h Detoast plpgsql variables if they might live across a transaction boundary. 2018-05-16 14:56:52 -04:00
postgres_ext.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
postgres_fe.h Update copyright for 2018 2018-01-02 23:30:12 -05:00
rusagestub.h Update copyright for 2018 2018-01-02 23:30:12 -05:00
windowapi.h Update copyright for 2018 2018-01-02 23:30:12 -05:00