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Michael Paquier 409f9ca447 Reset properly snapshot export state during transaction abort ... During a replication slot creation, an ERROR generated in the same transaction as the one creating a to-be-exported snapshot would have left the backend in an inconsistent state, as the associated static export snapshot state was not being reset on transaction abort, but only on the follow-up command received by the WAL sender that created this snapshot on replication slot creation. This would trigger inconsistency failures if this session tried to export again a snapshot, like during the creation of a replication slot. Note that a snapshot export cannot happen in a transaction block, so there is no need to worry resetting this state for subtransaction aborts. Also, this inconsistent state would very unlikely show up to users. For example, one case where this could happen is an out-of-memory error when building the initial snapshot to-be-exported. Dilip found this problem while poking at a different patch, that caused an error in this code path for reasons unrelated to HEAD. Author: Dilip Kumar Reviewed-by: Michael Paquier, Zhihong Yu Discussion: https://postgr.es/m/CAFiTN-s0zA1Kj0ozGHwkYkHwa5U0zUE94RSc_g81WrpcETB5=w@mail.gmail.com Backpatch-through: 9.6		4 years ago
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backend	Reset properly snapshot export state during transaction abort	4 years ago
bin	Fix portability issues in new TAP tests of psql	4 years ago
common	Fix memory leak in pg_hmac	4 years ago
fe_utils	Skip trailing whitespaces when parsing integer options	5 years ago
include	Reset properly snapshot export state during transaction abort	4 years ago
interfaces	Fix check for trapping exit() calls in libpq	4 years ago
makefiles	Add NO_INSTALL option to pgxs	5 years ago
pl	plperl: update ppport.h to Perl 5.34.0.	4 years ago
port	Treat ETIMEDOUT as indicating a non-recoverable connection failure.	4 years ago
template	…
test	Fix PostgresNode install_path sanity tests that fail on Windows	4 years ago
timezone	Doc: improve timezone/README's recipe for tracking Windows zones.	4 years ago
tools	Fix WAL replay in presence of an incomplete record	4 years ago
tutorial	…
.gitignore	…
DEVELOPERS	…
Makefile	…
Makefile.global.in	Provide error hint if TAP tests are not enabled	4 years ago
Makefile.shlib	AIX: Fix missing libpq symbols by respecting SHLIB_EXPORTS.	4 years ago
nls-global.mk	…