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https://issues.apache.org/jira/browse/HDDS-16445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng updated HDDS-16445:
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Attachment: HDDS-16445.001.patch
> SCM over replication split lock read can delete a live replica and drop a
> CLOSED container below RF
> ---------------------------------------------------------------------------------------------------
>
> Key: HDDS-16445
> URL: https://issues.apache.org/jira/browse/HDDS-16445
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Siyao Meng
> Priority: Major
> Attachments: HDDS-16445.001.patch
>
>
> h3. Finding
> A split-lock read in processOverReplicatedContainer issues an extra delete
> against a live replica, dropping a CLOSED RF=3 container below RF
> (DurableReplicationFloor safety violation). Reachable from normal concurrent
> over-replication processing racing a container-report handler; harm is
> bounded because a later cycle re-replicates, so High rather than Critical.
> h3. Classification
> * Verdict: REPRODUCED
> * Severity: High
> * Source: Specula TLA+ model checking and confirmation debate, finding MC-1
> h3. Reproduce
> {noformat}
> Ozone commit: 9fbf9ee0cb1bd2f5f5d437b6719ebbe5309351fb
> Specula: v1.1.0 (commit c6aa3dfa)
> Target: scm-ratis-replication
> Guidance:
> campaigns/ozone-9fbf9ee/targets/012-scm-ratis-replication/.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-ratis-replication|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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