Default block size in Hadoop 2.x is 128 MB. So, a file of size 514 MB will be divided into 5 blocks ( 514 MB/128 MB) where the first four blocks will be of 128 MB and the last block will be of 2 MB only. Since, we are using the default replication factor i.e. 3, each block will be replicated thrice. Therefore, we will have 15 blocks in total where 12 blocks will be of size 128 MB each and 3 blocks of size 2 MB each.