First we will go through list of configuration files and their properties. below are commands to check all configurations $ /usr/lib/hadoop/etc/hadoop Read More
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 term Big data refers to any kind of data that is in large volume or huge amount. It may be audio files,video files,documents,xls,pdfs .. and any kind from which we can get information. How we will Identify whether data is big or small or is there any limit set for it? Answer is No. Read More
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
If you are stuck in pooling the request and need a timer just use these simple line of code. Just For typescript or if you are using ionic with dynamic loader, I created this to show message on loader Here loading:any; is a variable declared for loader.