{"id":"watermark-finalization-is-irreversible","text":"Aggregation windows are finalized only by watermark advance, follow a one-directional state lifecycle (OPEN→CLOSED→FINALIZED), and provide no mechanism to update or retract emitted results — finalization is a permanent commitment.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["watermark-drives-finalization","window-lifecycle-one-directional","no-window-merging-or-retraction"],"outlist":[],"label":"Three properties compose into hard irreversibility: watermark-only trigger + one-way lifecycle + no retraction"}],"dependents":["append-only-semantics-span-storage-and-streaming","dedup-and-finalization-are-coordinated","pipeline-processing-maximizes-forward-progress","state-ratchets-prevent-regression-across-domains"],"metadata":{"last_reviewed":"2026-06-06T06:26:57","review_result":"pass"},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"watermark-finalization-is-irreversible","truth_value":"IN","reason":"SL justification valid","antecedents":["watermark-drives-finalization","window-lifecycle-one-directional","no-window-merging-or-retraction"],"label":"Three properties compose into hard irreversibility: watermark-only trigger + one-way lifecycle + no retraction"},{"node":"watermark-drives-finalization","truth_value":"IN","reason":"premise"},{"node":"window-lifecycle-one-directional","truth_value":"IN","reason":"premise"},{"node":"no-window-merging-or-retraction","truth_value":"IN","reason":"premise"}]}}