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https://issues.apache.org/jira/browse/HDDS-16462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng updated HDDS-16462:
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Attachment: HDDS-16462.001.patch
> Recon full snapshot onto an earlier OM lineage plus crash permanently serves
> stale derived data
> -----------------------------------------------------------------------------------------------
>
> Key: HDDS-16462
> URL: https://issues.apache.org/jira/browse/HDDS-16462
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Siyao Meng
> Priority: Critical
> Attachments: HDDS-16462.001.patch
>
>
> h3. Finding
> A full-snapshot swap onto an earlier OM lineage plus a crash before the async
> reprocess becomes durable leaves derived tables permanently built against the
> old OM lineage, because epoch-blind strict-less-than reconciliation judges
> the stale task caught up; Recon REST/API/UI then serves rows the current OM
> lineage does not contain, with no self-heal. Triggerable via the documented
> delta-failure to full-snapshot fallback after an OM DR restore or
> re-bootstrap.
> h3. Classification
> * Verdict: REPRODUCED
> * Severity: Critical
> * Source: Specula TLA+ model checking and confirmation debate, finding MC-2
> h3. Reproduce
> {noformat}
> Ozone commit: 9fbf9ee0cb1bd2f5f5d437b6719ebbe5309351fb
> Specula: v1.1.0 (commit c6aa3dfa)
> Target: recon-om-sync
> Guidance:
> campaigns/ozone-9fbf9ee/targets/023-recon-om-sync/.prompt-extra.md
> {noformat}
> {code:none}
> specula run --agent=claude-code --effort=medium --keep-original
> --max-parallel=2 \
> --enable-reviews --confirm-debate --tlc-memory-limit=28G
> --tlc-worker-limit=8 \
> "recon-om-sync|apache/ozone|Java|Use the target-specific .prompt-extra.md"
> {code}
> Discovered under HDDS-16434 (Specula TLA+ verification effort). The TLA+
> specification, counterexample, and confirmation debate live in the Specula
> run artifacts.
> Generated with Specula (Claude Opus 4.8).
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