Resolves the staleness threshold for upload distribution reconciliation from UPLOAD_STALE_RECONCILE_MS, falling back to 30 minutes when unset or invalid.
UPLOAD_STALE_RECONCILE_MS
Staleness threshold in milliseconds.
Resolves the staleness threshold for upload distribution reconciliation from
UPLOAD_STALE_RECONCILE_MS, falling back to 30 minutes when unset or invalid.