Hadoop Tutorial 1 - What is Hadoop?

One of the advantage of Social networking website is  they helps to promote new technologies even though its their need.

 

 Apache Hadoop is an open-source software framework for distributed storage and distributed processing of Big Data on clusters of commodity hardware. Its Hadoop Distributed File System (HDFS) splits files into large blocks (default 64MB or 128MB) and distributes the blocks amongst the nodes in the cluster. For processing the data, the Hadoop Map/Reduce ships code (specifically Jar files) to the nodes that have the required data, and the nodes then process the data in parallel.

 

 

 

http://en.wikipedia.org/wiki/Apache_Hadoop

Raspberry Pi - How to check Free space in Raspberry Pi

I was actually looking  how to check free space in Raspberry. The linux df command helps to check the disk file system.

 

You can try df -BM to get the disk space .

 

Raspberry Pi Using ‘-h‘ parameter with (df -h) will shows the file system disk space statistics in “human readable” format, means it gives the details in bytes, mega bytes and gigabyte. For more details on Df command visit http://www.tecmint.com/how-to-check-disk-space-in-linux/ 

Installing MongoDB (noSQL database) in Raspberry Pi

I am trying to install MongoDB in raspberry, Following steps are used to install in Raspberry.

http://c-mobberley.com/wordpress/2013/10/14/raspberry-pi-mongodb-installation-the-working-guide/

http://www.mongodb.com/nosql-explained