{"id":"join-window-and-aggregation-window-are-independent","text":"The join `TimeWindow` duration controls which event pairs can match, while the `TumblingWindowAggregator` window size controls result grouping; these are independent parameters that can differ without violating any invariant","truth_value":"IN","source":"entries/2026/05/29/topic-sliding-vs-tumbling-windows.md","source_url":"","source_hash":"","justifications":[],"dependents":["stream-join-correctness-depends-on-window-alignment"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"join-window-and-aggregation-window-are-independent","truth_value":"IN","reason":"premise"}]}}