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https://issues.apache.org/jira/browse/HDDS-16427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng reopened HDDS-16427:
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> Formal verification for Ozone OM write path (double buffer and client Ratis
> write) with TLA+
> --------------------------------------------------------------------------------------------
>
> Key: HDDS-16427
> URL: https://issues.apache.org/jira/browse/HDDS-16427
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Siyao Meng
> Priority: Major
>
> Use TLA+ (via the Specula pipeline) to model and verify the OM write path:
> the OM double buffer flush and ordering, and the client side Ratis write
> commit and retry path. Model check the specification and validate real OM
> traces against it. Bugs found by this effort are linked under this issue.
> h3. Run environment
> {noformat}
> Ozone commit: 9fbf9ee0cb1bd2f5f5d437b6719ebbe5309351fb
> Specula: v1.1.0 (commit c6aa3dfa)
> Agent/model: claude-code, Claude Opus 4.8 (1M context)
> {noformat}
> h3. Coverage
> ||Target||Effort||Guidance||Result||
> |om-double-buffer|high|{{campaigns/ozone-9fbf9ee/targets/007-om-double-buffer/.prompt-extra.md}}|No
> findings|
> |client-ratis-write|high|{{campaigns/ozone-9fbf9ee/targets/002-client-ratis-write/.prompt-extra.md}}|No
> findings|
> h3. Reproduce
> {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 \
> "<target>|apache/ozone|Java|Use the target-specific .prompt-extra.md"
> {code}
> h3. Bugs
> None. Both targets model checked clean at the pinned commit.
> Generated with Specula (Claude Opus 4.8).
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