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https://issues.apache.org/jira/browse/HDDS-16454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng updated HDDS-16454:
------------------------------
Attachment: HDDS-16454.001.patch
> New SCM leader with apply lagging commit drops container reports as
> CONTAINER_NOT_FOUND
> ---------------------------------------------------------------------------------------
>
> Key: HDDS-16454
> URL: https://issues.apache.org/jira/browse/HDDS-16454
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Siyao Meng
> Priority: Minor
> Attachments: HDDS-16454.001.patch
>
>
> h3. Finding
> The new-leader branch starts the datanode server with applied index below
> committed index, so reports for committed-but-unapplied containers are
> dropped as CONTAINER_NOT_FOUND, leaving SCM's in-memory replica-location
> accounting incomplete; triggerable when leadership moves to a node whose
> apply lags commit. Masked because the default WARN action never deletes the
> physical replica, the NodeManager node-to-container map is retained, and
> replication-manager consumers are gated on isLeaderReady and safe-mode exit,
> so only self-correcting RM churn could surface in the report-interval window.
> h3. Classification
> * Verdict: MASKED
> * Severity: Medium
> * 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-follower-catchup
> Guidance:
> campaigns/ozone-9fbf9ee/targets/019-scm-follower-catchup/.prompt-extra.md
> {noformat}
> {code:none}
> specula run --agent=claude-code --effort=high --keep-original
> --max-parallel=2 \
> --enable-reviews --confirm-debate --tlc-memory-limit=28G
> --tlc-worker-limit=8 \
> "scm-follower-catchup|apache/ozone|Java|Use the target-specific
> .prompt-extra.md"
> {code}
> Discovered under HDDS-16432 (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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