What is federation in Hadoop?

Before explaining a federation concept we must know what are NameNodes, DataNodes and their functionality. HDFS follows master- slave architecture. HDFS cluster consists of a single Master called as NameNode. A master server manages the file system namespace and contains metadata information. Metadata information means mapping of data blocks to DataNodes anywhere in Rack. In Read More

The Creator

Many people today believe there is no God Atheists find it really difficult to accept the fact that we have a creator. They will go any length to try and explain how the universe was created and how we all just came into existence without a creator and ironically call themselves rational thinkers. Let me Read More