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https://issues.apache.org/jira/browse/HDDS-16447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng updated HDDS-16447:
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Attachment: HDDS-16447.001.patch
> SCM out of lock race re inserts a DELETE op for an already deleted replica,
> corrupting inflight accounting
> ----------------------------------------------------------------------------------------------------------
>
> Key: HDDS-16447
> URL: https://issues.apache.org/jira/browse/HDDS-16447
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Siyao Meng
> Priority: Major
> Attachments: HDDS-16447.001.patch
>
>
> h3. Finding
> An out-of-lock race re-inserts a DELETE op for an already-deleted replica,
> producing an orphaned pending op that is never confirmable and resent every
> RM cycle; the inflated inflight-delete count propagates to a real external
> effect (RM issues spurious replicate and redundant delete commands to
> datanodes, and over/under-replication accounting stays corrupted for the
> whole SCM leadership term). Persistent until leadership change, so High
> rather than Critical.
> h3. Classification
> * Verdict: REPRODUCED
> * Severity: High
> * Source: Specula TLA+ model checking and confirmation debate, finding MC-2
> h3. Reproduce
> {noformat}
> Ozone commit: 9fbf9ee0cb1bd2f5f5d437b6719ebbe5309351fb
> Specula: v1.1.0 (commit c6aa3dfa)
> Target: scm-pending-replica-ops
> Guidance:
> campaigns/ozone-9fbf9ee/targets/014-scm-pending-replica-ops/.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 \
> "scm-pending-replica-ops|apache/ozone|Java|Use the target-specific
> .prompt-extra.md"
> {code}
> Discovered under HDDS-16431 (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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