OptionalcoverageFraction (0-1) of the requested window that actually holds data, as
reported once preparation completes. Present only on the final preparing
event. Worth reading on a sweep in particular: a thinly covered window is
about to be scored once per parameter vector.
Optionalpercent0-100, computed from the runs finished out of the runs expected (done /
total on the snapshot, both run-level counts — not the shard counts,
which partition units of work rather than runs). Absent on stage
transitions before the first poll.
OptionalsnapshotThe platform's progress record for the sweep. Present only on executing
events.
Current workflow stage.
Emitted at stage transitions and after each poll of a running sweep.
The
snapshotis where the detail lives — see SweepProgress, whose counts measure different things and must not be added together.