Hadoop & Use Cases

I spent a little time in digging out various use cases for Hadoop. Here are some of the use cases, listed by business use:

• Search: Yahoo, Zvents, Amazon A9,
  
• Log processing: Facebook, ContextWeb, Yahoo, Joost
• Recommendation Systems: Facebook, Amazon (eg, ad placements or site suggestions)
  
• Data Warehouse: Facebook, AOL
• Video and Image Analysis: Eyealike, New York Times

Note that even the search use cases of Yahoo or A9 do not use Hadoop when a user clicks "Search" button, but merely parses the web data and generates the index files on the back-end. Hadoop takes care of the node failures during the processing and provides massive scalability & load balancing.