Timeline switching with partial WAL records can break replica recovery

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ID 6038
Title Timeline switching with partial WAL records can break replica recovery
CI (CFBot) Summary
Stats (from CFBot) Patch version: v3, Patch count: 3, First patch: +93βˆ’90, All patches: +128βˆ’109
Topic Replication & Recovery
Tags Bugfix
Created 2025-09-08 04:11:04
Last modified 2025-09-08 04:11:05 (6 days ago)
Latest email 2025-09-10 09:07:35 (4 days ago)
Status
PG19-3 (2025-11-01 – 2025-11-30): Needs review
Target version 18
Authors Alyona Vinter (dlaaren)
Reviewers Become reviewer
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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
2025-09-08 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
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