Horton

Re: XID formatting and SLRU refactorings (was: Add 64-bit XIDs into PostgreSQL 15)

Maxim Orlov <orlovmg@gmail.com>

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From: Maxim Orlov <orlovmg@gmail.com>
To: Aleksander Alekseev <aleksander@timescale.com>
Cc: Postgres hackers <pgsql-hackers@lists.postgresql.org>, Alexander Korotkov <aekorotkov@gmail.com>, Heikki Linnakangas <hlinnaka@iki.fi>, Japin Li <japinli@hotmail.com>, Andres Freund <andres@anarazel.de>, Michael Paquier <michael@paquier.xyz>, Pavel Borisov <pashkin.elfe@gmail.com>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Date: 2023-11-09T16:22:11Z
Lists: pgsql-hackers

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Aleksander Alekseev,

> Maxim,
> I see both of us accounted for Alexanders feedback and submitted v59.
> Your newer version seems to have issues on cfbot, so resubmitting the
> previous patchset that passes the tests. Please feel free to add
> changes.

For unknown reasons, I do not receive any of your emails from after
2023-11-07 11:57:12 (Message-ID: CAJ7c6TN1hKqNPGrNcq96SUyD=
Z61raKGXF8iqq36qr90oudxRg@mail.gmail.com).
Even after resend.

Anyway, PFA patch set of version 61.  I've made some minor changes in the
0001 and add 004 in order to test actual 64-bit SLRU pages.

As for CF bot had failed on my v59 patch set, this is because of the bug.
It's manifested because of added 64-bit pages tests.
The problem was in segno calculation, since we convert it from file name
using strtol call.  But strtol return long,
which is 4 byte long in x86.

-           segno = (int) strtol(clde->d_name, NULL, 16);
+           segno = strtoi64(clde->d_name, NULL, 16);

-- 
Best regards,
Maxim Orlov.

Commits

  1. Fix more holes with SLRU code in need of int64 for segment numbers

  2. Use more consistently int64 for page numbers in SLRU-related code

  3. Improve comments in slru.{c,h} about segment name format

  4. Reorder actions in ProcArrayApplyRecoveryInfo()

  5. Fix typo in 5a1dfde8334b

  6. Fix warning due non-standard inline declaration in 4ed8f0913bfdb5f355

  7. Add SLRU tests for 64-bit page case

  8. Make use FullTransactionId in 2PC filenames

  9. Use larger segment file names for pg_notify

  10. Index SLRUs by 64-bit integers rather than by 32-bit integers

  11. Keep track of transaction commit timestamps

  12. Handle 5-char filenames in SlruScanDirectory