Timeline switching with partial WAL records can break replica recovery

Title

CI (CFBot)

Needs rebase! Needs rebase since 10 months. Failing since 10 months.
Additional links previous successfully applied patch (outdated):

Summary

Stats (from CFBot)

Unknown

Tags

Bugfix

Created

2025-09-08 04:11:04

Last modified

2026-10-02 02:59:48 (51 minutes ago)

Latest email

2026-01-14 07:11:45 (8 months ago)

Status

PG20-3 (2026-11-01 – 2026-11-30): Needs review

PG19-Final (2026-03-01 – 2026-04-09): Moved to different CF

PG19-3 (2025-11-01 – 2025-11-30): Moved to different CF

Target version

Authors

Alyona Vinter (dlaaren)

Reviewers

Artem Gavrilov (artem.gavrilov) Become reviewer

Committer

Links

Emails

Timeline switching with partial WAL records can break replica recovery: First at 2025-06-15 05:11:24 by D Laaren <dlaaren8 at gmail.com>
Latest at 2026-01-14 07:11:45 by Alena Vinter <dlaaren8 at gmail.com>
Latest attachment (contrecord_from_archive.jpg) at 2025-12-26 07:09:08 from Alena Vinter <dlaaren8 at gmail.com>
    Attachment (contrecord_from_archive.jpg) at 2025-12-26 07:09:08 from Alena Vinter <dlaaren8 at gmail.com> (Patch: No)
    Attachment (v3-0001-Handle-WAL-timeline-switches-with-incomplete-records.patch) at 2025-09-10 09:07:35 from Alyona Vinter <dlaaren8 at gmail.com> (Patch: Yes)
    Attachment (v1-0002-scenario_wal_divergence.png) at 2025-09-04 08:40:47 from Nataliia <k.natalissa at gmail.com> (Patch: No)
    Attachment (v2-0001-FIX-Handle-WAL-timeline-switches-with-incomplete-records.patch) at 2025-09-03 05:39:43 from Alyona Vinter <dlaaren8 at gmail.com> (Patch: Yes)
    Attachment (v2-0002-FIX-Removed-assertion-in-walsummarizer.patch) at 2025-09-03 05:37:18 from Alyona Vinter <dlaaren8 at gmail.com> (Patch: Yes)
    Attachment (how_replicas_enter_indefinite_loop_1.jpg) at 2025-06-17 11:59:14 from D Laaren <dlaaren8 at gmail.com> (Patch: No)
    Attachment (v1-0001-Fix-missing-XLOG_OVERWRITE_CONTRECORD-in-timeline_switches.patch) at 2025-06-15 05:11:24 from D Laaren <dlaaren8 at gmail.com> (Patch: Yes)

History

When	Who	What
2026-10-02 02:59:48	shihao zhong (zhong950419)	Moved from CF PG19-Final to CF PG20-3
2026-02-03 22:11:20	Álvaro Herrera (alvherre)	Moved from CF PG19-3 to CF PG19-Final
2025-12-16 14:24:45	Artem Gavrilov (artem.gavrilov)	Added artem.gavrilov as reviewer
2025-11-07 04:11:22	CFbot	Patch needs rebase
2025-09-08 04:11:05	Alyona Vinter (dlaaren)	Attached mail thread CAGWv16KJg=SHKxwTWxGFo9zibmEompk=bfK0MRHTEh8NipoyHQ@mail.gmail.com
2025-09-08 04:11:04	Alyona Vinter (dlaaren)	Created patch record