Returns child replay slots containing unacknowledged records.
The scan is deliberately read-only and does not inspect lock ownership.
Adoption obtains the replay store's exclusive lock, closing the race with a
live foreground producer or another drainer.
Returns child replay slots containing unacknowledged records.
The scan is deliberately read-only and does not inspect lock ownership. Adoption obtains the replay store's exclusive lock, closing the race with a live foreground producer or another drainer.