Timeline switching with partial WAL records can break replica recovery

Title

CI (CFBot)

Needs rebase! Needs rebase since 1 week. Failing since 1 week.
Additional links previous successfully applied patch (outdated):

Summary

Stats (from CFBot)

Unknown

Topic

Replication & Recovery

Tags

Bugfix

Created

2025-09-08 04:11:04

Last modified

2025-09-08 04:11:05 (2 months ago)

Latest email

2025-09-10 09:07:35 (2 months ago)

Status

PG19-3 (2025-11-01 – 2025-11-30): Needs review

Target version

Authors

Alyona Vinter (dlaaren)

Reviewers

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 2025-09-10 09:07:35 by Alyona Vinter <dlaaren8 at gmail.com>
Latest 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>
    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
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