Amit Kapila d1ffcc7fa3 Fix an assert in CheckPointReplicationSlots(). Commit `e0b2eed047` assumed that the confirmed_flush LSN can't go backward. However, it is possible that confirmed_flush LSN can go backward temporarily when the client acknowledges a prior value of flush location. This can happen when the client (subscriber in this case) acknowledges an LSN it doesn't have to do anything for (say for DDLs) and thus didn't store persistently. After restart, the client sends the prior value of flush LSN which it had stored persistently and the server updates the confirmed_flush LSN with that value. The fix is to remove the assumption and not allow the prior value of confirmed_flush LSN to be flushed to the disk. Author: Vignesh C Reviewed-by: Amit Kapila, Shlok Kyal Discussion: https://postgr.es/m/CALDaNm3hgow2+oEov5jBk4iYP5eQrUCF1yZtW7+dV3J__p4KLQ@mail.gmail.com		2 years ago
config	jit: Remove {llvm-config,clang}-N configure probes.	2 years ago
contrib	postgres_fdw: Refuse to send FETCH FIRST WITH TIES to remote servers.	2 years ago
doc	Doc: Fix ambuiguity in column lists.	2 years ago
src	Fix an assert in CheckPointReplicationSlots().	2 years ago
.cirrus.star	…
.cirrus.tasks.yml	ci: windows: Use the same image for VS and MinGW tasks	2 years ago
.cirrus.yml	…
.dir-locals.el	…
.editorconfig	…
.git-blame-ignore-revs	Add `da256a4a7` to .git-blame-ignore-revs.	2 years ago
.gitattributes	…
.gitignore	…
COPYRIGHT	…
GNUmakefile.in	Allow selecting the git revision to be packaged by "make dist".	2 years ago
HISTORY	…
Makefile	Remove AIX support	2 years ago
README.md	Revise the style of a paragraph in README.md.	2 years ago
aclocal.m4	…
configure	Stamp 17beta1.	2 years ago
configure.ac	Stamp 17beta1.	2 years ago
meson.build	meson: Restore implicit warning/debug/optimize flags for extensions	2 years ago
meson_options.txt	Allow selecting the git revision to be packaged by "make dist".	2 years ago

README.md

PostgreSQL Database Management System

This directory contains the source code distribution of the PostgreSQL database management system.

PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.