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postgresql/src/include
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Andres Freund 29e8c881dd Don't use on-disk snapshots for exported logical decoding snapshot. 
Logical decoding stores historical snapshots on disk, so that logical
decoding can restart without having to reconstruct a snapshot from
scratch (for which the resources are not guaranteed to be present
anymore).  These serialized snapshots were also used when creating a
new slot via the walsender interface, which can export a "full"
snapshot (i.e. one that can read all tables, not just catalog ones).

The problem is that the serialized snapshots are only useful for
catalogs and not for normal user tables.  Thus the use of such a
serialized snapshot could result in an inconsistent snapshot being
exported, which could lead to queries returning wrong data.  This
would only happen if logical slots are created while another logical
slot already exists.

Author: Petr Jelinek
Reviewed-By: Andres Freund
Discussion: https://postgr.es/m/f37e975c-908f-858e-707f-058d3b1eb214@2ndquadrant.com
Backport: 9.4, where logical decoding was introduced.
2017-04-27 15:29:33 -07:00
..
access Don't use bgw_main even to specify in-core bgworker entrypoints. 2017-03-31 20:47:50 -04:00
bootstrap Update copyright for 2016 2016-01-02 13:33:40 -05:00
catalog Fix copy-pasto in comment. 2016-10-12 12:08:38 +03:00
commands Final pgindent + perltidy run for 9.6. 2016-08-15 13:42:51 -04:00
common Fix integer-overflow problems in interval comparison. 2017-04-05 23:51:28 -04:00
datatype Be more careful about out-of-range dates and timestamps. 2016-03-16 19:09:28 -04:00
executor Avoid passing function pointers across process boundaries. 2017-04-15 16:23:27 -04:00
fe_utils Fix assorted places in psql to print version numbers >= 10 in new style. 2016-08-16 15:58:46 -04:00
foreign Remove GetUserMappingId() and GetUserMappingById(). 2016-07-22 11:32:23 -04:00
lib Revert "Permit dump/reload of not-too-large >1GB tuples" 2016-12-06 12:46:03 -03:00
libpq Fix pq_putmessage_noblock() to not block. 2016-07-29 12:52:57 -04:00
mb Update copyright for 2016 2016-01-02 13:33:40 -05:00
nodes Improve castNode notation by introducing list-extraction-specific variants. 2017-04-10 13:51:29 -04:00
optimizer Avoid making a separate pass over the query to check for partializability. 2016-06-26 15:55:01 -04:00
parser Fix type-safety problem with parallel aggregate serial/deserialization. 2016-06-22 16:52:41 -04:00
port Fix unportable definition of BSWAP64() macro. 2017-02-24 15:21:39 -05:00
portability Update copyright for 2016 2016-01-02 13:33:40 -05:00
postmaster Avoid using PostmasterRandom() for DSM control segment ID. 2016-09-23 09:54:11 -04:00
regex Suppress compiler warnings about useless comparison of unsigned to zero. 2016-02-15 17:12:16 -05:00
replication Don't use on-disk snapshots for exported logical decoding snapshot. 2017-04-27 15:29:33 -07:00
rewrite Update copyright for 2016 2016-01-02 13:33:40 -05:00
snowball Update copyright for 2016 2016-01-02 13:33:40 -05:00
storage Preserve required !catalog tuples while computing initial decoding snapshot. 2017-04-27 13:13:36 -07:00
tcop Remove dead code and fix comments in fast-path function handling. 2017-04-06 09:11:11 +03:00
tsearch Fix typos in comments. 2017-02-06 11:34:15 +02:00
utils Handle ALTER EXTENSION ADD/DROP with pg_init_privs 2017-01-29 23:05:09 -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 Fix typos in comments. 2017-02-06 11:34:15 +02:00
fmgr.h Revert addition of PGDLLEXPORT in PG_FUNCTION_INFO_V1 macro. 2016-10-12 18:01:52 -04:00
funcapi.h Widen query numbers-of-tuples-processed counters to uint64. 2016-03-12 16:05:29 -05:00
getaddrinfo.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
getopt_long.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
Makefile Create src/fe_utils/, and move stuff into there from pg_dump's dumputils. 2016-03-24 15:55:57 -04:00
miscadmin.h Mark PostmasterPid as PGDLLIMPORT. 2016-06-03 14:06:35 -04:00
pg_config.h.in Revert "Use pselect(2) not select(2), if available, to wait in postmaster's loop." 2017-04-24 18:29:55 -04:00
pg_config.h.win32 Revert "Use pselect(2) not select(2), if available, to wait in postmaster's loop." 2017-04-24 18:29:55 -04:00
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 Bring some clarity to the defaults for the xxx_flush_after parameters. 2016-11-25 18:36:10 -05:00
pg_getopt.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pg_trace.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pgstat.h Fix typos in comments. 2016-10-26 11:13:17 +03:00
pgtar.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pgtime.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
port.h Run the postmaster's signal handlers without SA_RESTART. 2017-04-24 13:00:23 -04:00
postgres.h Adjust DatumGetBool macro, this time for sure. 2016-04-28 11:50:58 -04:00
postgres_ext.h Add a nonlocalized version of the severity field to client error messages. 2016-08-26 16:20:24 -04:00
postgres_fe.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
rusagestub.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
windowapi.h Update copyright for 2016 2016-01-02 13:33:40 -05:00