Question

If there are 10 HDFS blocks to be copied from one machine to another. However, the other machine can copy only 7.5 blocks, is there a possibility for the blocks to be broken down during the time of replication?

Answer 1

No, the blocks cannot be broken, it is the responsibility of the master node to calculate the space required and accordingly allocate the blocks.Master node monitors the number of blocks that are in use and keeps track of the available space.