/** Add a block to the list of pending Replications */ void add(Block block, int numReplicas) { synchronized (pendingReplications) { PendingBlockInfo found = pendingReplications.get(block); if (found == null) { pendingReplications.put(block, new PendingBlockInfo(numReplicas)); } else { found.incrementReplicas(numReplicas); found.setTimeStamp(); } } }