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https://issues.apache.org/jira/browse/HDDS-16451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng updated HDDS-16451:
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Attachment: HDDS-16451.001.patch
> Cross lock lost update of ContainerInfo sequenceId (masked by report resend
> and writeLock)
> ------------------------------------------------------------------------------------------
>
> Key: HDDS-16451
> URL: https://issues.apache.org/jira/browse/HDDS-16451
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Siyao Meng
> Priority: Minor
> Attachments: HDDS-16451.001.patch
>
>
> h3. Finding
> Cross-lock lost update of a shared ContainerInfo sequenceId (report path
> under synchronized(containerInfo), Ratis-apply path under striped
> writeLock(id)) is a real race but its harm is masked: for OPEN/QUASI_CLOSED
> the periodic report resend re-raises the value via max(), and the
> durable/follower value is serialized under writeLock so an in-memory clobber
> cannot corrupt it. Internal invariant violation with downstream risk (an
> understated in-memory seqId feeding a resurrection/close decision in a narrow
> window) but no consumer observed the wrong outcome.
> h3. Classification
> * Verdict: MASKED
> * Severity: Medium
> * Source: Specula TLA+ model checking and confirmation debate, finding CR-4
> h3. Reproduce
> {noformat}
> Ozone commit: 9fbf9ee0cb1bd2f5f5d437b6719ebbe5309351fb
> Specula: v1.1.0 (commit c6aa3dfa)
> Target: scm-container-lifecycle
> Guidance:
> campaigns/ozone-9fbf9ee/targets/015-scm-container-lifecycle/.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-container-lifecycle|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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