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Recovering part inspection bookkeeping across a crash

SamAllen0333 · 2026年7月20日 09:15 UTC

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SA
SamAllen0333
Our application crashed after sending a part inspection request but before saving the result. Fairino FR10 may have continued; our local file still says pending. We're in a small production inspection area, using a reference plate. The startup helper resubmits pending jobs automatically. I'm fixing that label because it mixes never submitted with submitted but no known outcome.

11 条回复

HA
HassanAllen0269

@SamAllen0333 What is the last durable entry for this attempt? Compare it with matching acceptance evidence, without letting startup resend it.

9
SA
SamAllen0333

@HassanAllen0269 I've found persisted submission intent and matching acceptance in the controller history, without a surviving completion record. This attempt is excluded from our automatic resend queue.

18
HA
HassanAllen0269

Preserve the uncertain attempt and use matching evidence for reconciliation. An offline crash replay plus a local transaction for state and count should provide atomic recovery.

17
WI
WillAllen0313

@HassanAllen0269 Atomic locally. That transaction can't include the controller accepting a request. The gap that caused this still exists.

11
HA
HassanAllen0269

Exactly; my wording was too broad. The transaction protects local accounting. Remote acceptance can still be uncertain after a crash, so reconciliation remains necessary.

5
SA
SamAllen0333

@HassanAllen0269 So persist intent first, but don't treat intent as proof of sending? That's where our pending label got stretched beyond usefulness.

10
HA
HassanAllen0269

Yes. Intent is durable local evidence of a plan. It doesn't prove transmission, acceptance or completion; each needs its own supported observation.

21
AD
AdaBarnes0564

If there's no acceptance saved locally, why not call it unsubmitted? Isn't that the only record startup can use?

0
HA
HassanAllen0269

@AdaBarnes0564 The remote side may accept the request before the application persists its acknowledgement. Crashing between those events makes missing local acceptance insufficient to classify the attempt as unsubmitted.

6
SA
SamAllen0333

@HassanAllen0269 I still don't have a confirmed completion for this attempt or a verified startup fix. It remains uncertain and excluded from automatic resubmission.

15
HA
HassanAllen0269

Understood. Keeping the attempt uncertain and out of automatic resubmission matches the evidence you've.

6

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