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Written by Siva   
Tuesday, 23 October 2012 08:18

Hadoop: What it is, how it works, and what it can do?

 

 

Thanks to http://strata.oreilly.com/2011/01/what-is-hadoop.html

Since I read in oreilly website, whatever interesting highlights, I pasted below, for complete details please read in above link.

 

Cloudera CEO Mike Olson on Hadoop's architecture and its data applications.

 


 

Where did Hadoop come from?

 

Mike Olson: The underlying technology was invented by Google back in their earlier days so they could usefully index all the rich textural and structural information they were collecting, and then present meaningful and actionable results to users....

 

 

What problems can Hadoop solve?

Mike Olson: The Hadoop platform was designed to solve problems where you have a lot of data — perhaps a mixture of complex and structured data — and it doesn’t fit nicely into tables. It’s for situations where you want to run analytics that are deep and computationally extensive, like clustering and targeting. That’s exactly what Google was doing when it was indexing the web and examining user behavior to improve performance algorithms....

 

 

How is Hadoop architected?

Mike Olson: Hadoop is designed to run on a large number of machines that don’t share any memory or disks. That means you can buy a whole bunch of commodity servers, slap them in a rack, and run the Hadoop software on each one. When you want to load all of your organization’s data into Hadoop, what the software does is bust that data into pieces that it then spreads across your different servers. There’s no one place where you go to talk to all of your data; Hadoop keeps track of where the data resides. And because there are multiple copy stores, data stored on a server that goes offline or dies can be automatically replicated from a known good copy.....

 

 

Thanks to http://strata.oreilly.com/2011/01/what-is-hadoop.html

Since I read in oreilly website, whatever interesting highlights, I pasted above, for complete details please read in above link.

 
 

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