int coarserSlot = suppliedSlot;
while (!done) {
try {
coarserGran = coarserGran.coarser();
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) +