Re: pg_upgrade test for binary compatibility of core data types

Peter Eisentraut <peter.eisentraut@enterprisedb.com>

From: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
To: Justin Pryzby <pryzby@telsasoft.com>, Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Andres Freund <andres@anarazel.de>, buschmann@nidsa.net, pgsql-hackers@lists.postgresql.org
Date: 2021-01-11T14:28:08Z
Lists: pgsql-bugs, pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  1. Move into separate file all the SQL queries used in pg_upgrade tests

  2. Add table to regression tests for binary-compatibility checks in pg_upgrade

  3. Fix tests of pg_upgrade across different major versions

  4. Multirange datatypes

  5. Work around cross-version-upgrade issues created by commit 9e38c2bb5.

  6. Declare assorted array functions using anycompatible not anyelement.

  7. Remove factorial operators, leaving only the factorial() function.

  8. Create by default sql/ and expected/ for output directory in pg_regress

  9. Add missing include to pg_upgrade/version.c

  10. Improve the check for pg_catalog.line data type in pg_upgrade

  11. Improve the check for pg_catalog.unknown data type in pg_upgrade

  12. Check for tables with sql_identifier during pg_upgrade

  13. pg_upgrade: clarify the database names in error files

  14. In the pg_upgrade test suite, don't write to src/test/regress.

  15. Allow group access on PGDATA

  16. Refactor dir/file permissions

  17. Remove unused functions in regress.c.

  18. Make WAL segment size configurable at initdb time.

  19. Fix bit-rot in pg_upgrade's test.sh, and improve documentation.

On 2020-12-27 20:07, Justin Pryzby wrote:
> On Wed, Dec 16, 2020 at 11:22:23AM -0600, Justin Pryzby wrote:
>> On Sun, Dec 06, 2020 at 12:02:48PM -0600, Justin Pryzby wrote:
>>> I meant to notice if the binary format is accidentally changed again, which was
>>> what happened here:
>>> 7c15cef86 Base information_schema.sql_identifier domain on name, not varchar.
>>>
>>> I added a table to the regression tests so it's processed by pg_upgrade tests,
>>> run like:
>>>
>>> | time make -C src/bin/pg_upgrade check oldsrc=`pwd`/11 oldbindir=`pwd`/11/tmp_install/usr/local/pgsql/bin
>>
>> Per cfbot, this avoids testing ::xml (support for which may not be enabled)
>> And also now tests oid types.
>>
>> I think the per-version hacks should be grouped by logical change, rather than
>> by version.  Which I've started doing here.
> 
> rebased on 6df7a9698bb036610c1e8c6d375e1be38cb26d5f

I think these patches could use some in-place documentation of what they 
are trying to achieve and how they do it.  The required information is 
spread over a lengthy thread.  No one wants to read that.  Add commit 
messages to the patches.