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Session grouping includes events from other keys · case 05

Session grouping includes events from other keys.

Member previewVariant 5 · 3 implementations · 7 checks per implementation

Case contract

Group [key,time,id] events into sessions independently by key. Sort each key by (time,id); consecutive gaps <=gap belong to one transitive session. Emit [key,first-time,last-time,ordered-ids] ordered by key and session time. An intervening bridge may join otherwise distant endpoints.

Why this case matters

A bounded deterministic data engine model makes representation and changelog faults reproducible.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
key separation	`[["a", 5, 5, [10, 11]], ["b", 5, 5, [10, 11]]]`	`[["a", 5, 5, [10]], ["b", 5, 5, [11]]]`	Failed

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