coarserSlot = coarserGran.slotFromFinerSlot(coarserSlot);
ConcurrentMap<Integer, UpdateStamp> updateStampsBySlotMap = getSlotStateManager(shard, coarserGran).slotToUpdateStampMap;
UpdateStamp coarseSlotStamp = updateStampsBySlotMap.get(coarserSlot);
if (coarseSlotStamp == null) {
log.debug("No stamp for coarser slot: " + coarserGran.formatLocatorKey(coarserSlot, shard) +
" ; supplied slot: " + suppliedGranularity.formatLocatorKey(suppliedSlot, shard));
updateStampsBySlotMap.putIfAbsent(coarserSlot,
new UpdateStamp(serverTimeMillisecondTicker.read(), UpdateStamp.State.Active, true));
continue;
}