I'm testing our sample acceptance bookkeeping tracking offline for a setup using Universal Robots UR5e in a workshop fixture-checking station, with a sample bracket as a reference. An earlier attempt's completion incorrectly completes a newer attempt if I deliver it after that attempt starts.
I need repeatable delayed and duplicate event tests because the random sleeps aren't reliable.
Our retry bookkeeping needs a tougher offline test (sample acceptance bookkeeping)
CalebAdams0145 · 2026年9月2日 14:31 UTC
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@CalebAdams0145 Can you preserve that failing delivery sequence and check which identifier the handler uses to match completion: the specific attempt or only the job label?
10分Just the job label. I've saved the sequence: earlier completion arrives after the new attempt starts. It reproduces the wrong match.
23分Use the saved sequence to exercise matching by attempt identity, with a controllable harness clock. Making the ordering deterministic should cover this race condition.
16分@HenryAdams0090 It covers that order, not every race. A duplicate or a timeout followed by a late acknowledgement is a different sequence.
5分You're right; my coverage claim was too broad. This schedule targets the reproduced mismatch, and the duplicate and post-timeout acknowledgement cases need their own schedules.
21分For a duplicate, should our history keep both observations even if the completed count only changes once?
19分@CalebAdams0145 Keep the duplicate in diagnostic history while making the completion update idempotent, so receiving it again doesn't alter the accepted result or count.
4分Is idempotent just another word for ignoring the second message? I'm not sure how that fits with retaining it in the history.
6分Idempotence means reapplying the message doesn't change the result again. Recording that it arrived is separate from repeating the completion or count update.
18分My offline test used to assert only the final count. It missed a duplicate notification because the number happened to stay right.
12分