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https://issues.apache.org/jira/browse/HDDS-16440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng updated HDDS-16440:
------------------------------
Attachment: HDDS-16440.001.patch
> DirectoryDeletingService can NPE on a transient Ratis submit failure (masked
> by BackgroundService catch)
> --------------------------------------------------------------------------------------------------------
>
> Key: HDDS-16440
> URL: https://issues.apache.org/jira/browse/HDDS-16440
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Siyao Meng
> Priority: Minor
> Attachments: HDDS-16440.001.patch
>
>
> h3. Finding
> A missing null check turns a tolerated transient Ratis submit failure
> (ServiceException producing a null response) into an uncaught NPE
> dereferencing resp.getSuccess() in the DirectoryDeletingService background
> task. Masked by BackgroundService.run()'s unconditional catch(Throwable),
> which logs and reschedules next interval, and nothing durable is written;
> absent that guard the NPE would abort the run and risk stalling the periodic
> deletion loop (liveness, no data corruption).
> h3. Classification
> * Verdict: MASKED
> * Severity: Medium
> * Source: Specula TLA+ model checking and confirmation debate, finding CR-5
> h3. Reproduce
> {noformat}
> Ozone commit: 9fbf9ee0cb1bd2f5f5d437b6719ebbe5309351fb
> Specula: v1.1.0 (commit c6aa3dfa)
> Target: om-fso-recursive-deletion
> Guidance:
> campaigns/ozone-9fbf9ee/targets/005-om-fso-recursive-deletion/.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 \
> "om-fso-recursive-deletion|apache/ozone|Java|Use the target-specific
> .prompt-extra.md"
> {code}
> Discovered under HDDS-16429 (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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