OptionaldelayOptionaloffsetNon-negative phase shift from the default midnight UTC alignment. For example, offset=22h on a 24h window produces boundaries at 22:00 UTC (17:00 New York in standard time) instead of midnight UTC. If unset, the offset is zero. Must be shorter than window_duration.
OptionalwindowThe duration of each tumbling window (non-overlapping, fixed-duration windows).
Non-negative analytic lag that evaluates the window this far in the past. Use this for timing variations unrelated to source lateness, such as a 30-day count as of one week ago. If unset, the analytic lag is zero. It composes with source.lateness when both are set.