Hadoop Commercialization coming from Cloudera
Yahoo, Google, Facebook use Hadoop to customise what folks see on dynamic homepages and to suggest long-lost friends on Facebook, LinkedIn etc. Map reduce searches in batch the masses of data sharded over many data servers.
Yahoo is estimated to have spent tens of millions of dollars developing Hadoop, which remains open-source software that anyone can use or modify.
Thanks to Doug Cutting and Yahoo. Pic credit, NY Times .