Big Data Tutorials

• http://searchstorage.techtarget.com/guides/Big-data-tutorial-Everything-you-need-to-know
• http://bigdatauniversity.com/courses/index.php
• http://developer.yahoo.com/hadoop/tutorial/
• http://hortonworks.com/resources/?did=71&cat=1
• http://ctovision.com/2013/09/what-does-hadoop-mean-to-big-data/

In-memory Hadoop – use it when speed matters

GridGain has a 100% HDFS compatible RAM solution that it claims is 10x faster for IO and network intensive MapReduce processing. I understand the IO, but am not sure why it work help with network intensive operations.  It can be used standalone or along with disk based HDFS as a cache. It is compatible with all Hadoop distributions as well as standard tools like HBase, Hive, etc.

Source:

• http://ctovision.com/2013/09/in-memory-hadoop-use-it-when-speed-matters/