As of my knowledge Hadoop default replication factor of data node is 3 not more or less than this. can anybody explain me why Hadoop consider as 3 only?
The base concept of hadoop replication factor is 3 is:
1: The 1st replication is always used for write operation
2: The 2nd replication factor always consider as backup for disaster recover.
3: The 3rd replication is always used for high throughput on read operation where the 1st node is busy with write operation.