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We were using SnapshotAny to do some index checks, but that's wrong and causes spurious errors when used on indexes created by CREATE INDEX CONCURRENTLY. Fix it to use an MVCC snapshot, and add a test for it. Backpatch of 6bd469d26aca to branches 14-16. I previously misidentified the bug's origin: it came in with commit 7f563c09f890 (pg11-era, not 5ae2087202af as claimed previously), so all live branches are affected. Also take the opportunity to fix some comments that we failed to update in the original commits and apply pgperltidy. In branch 14, remove the unnecessary test plan specification (which would have need to have been changed anyway; c.f. commit 549ec201d613.) Diagnosed-by: Donghang Lin <donghanglin@gmail.com> Author: Mihail Nikalayeu <mihailnikalayeu@gmail.com> Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru> Backpatch-through: 17 Discussion: https://postgr.es/m/CANtu0ojmVd27fEhfpST7RG2KZvwkX=dMyKUqg0KM87FkOSdz8Q@mail.gmail.com
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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.