Horton

Re: BUG #16045: vacuum_db crash and illegal memory alloc after pg_upgrade from PG11 to PG12

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>
Cc: Andres Freund <andres@anarazel.de>, buschmann@nidsa.net, pgsql-bugs@lists.postgresql.org
Date: 2019-10-10T14:19:12Z
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.

Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> Fair enough, attached is a patch doing that, I think. Maybe the file
> should be named differently, as it contains other objects than just
> tables.

Seems about right, though I notice it will not detect domains over
sql_identifier.  How much do we care about that?

To identify such domains, I think we'd need something like
WHERE attypid IN (recursive-WITH-query), which makes me nervous.
We did support those starting with 8.4, which is as far back as
pg_upgrade will go, so in theory it should work.  But I think we
had bugs with such cases in old releases.  Do we want to assume
that the source server has been updated enough to avoid any such
bugs?  The expense of such a query might be daunting, too.

			regards, tom lane