/** @return the total bytes on each storage tier */
public Map<String, Long> getTotalBytesOnTiers() {
Map<String, Long> ret = new HashMap<>();
for (MasterWorkerInfo worker : mWorkers) {
synchronized (worker) {
for (Map.Entry<String, Long> entry : worker.getTotalBytesOnTiers().entrySet()) {
Long total = ret.get(entry.getKey());
ret.put(entry.getKey(), (total == null ? 0L : total) + entry.getValue());
}
}
}
return ret;
}
