Yesterday Yahoo announced that it will discontinue The Yahoo Distribution of Hadoop and refocus its development efforts on the main Apache Hadoop distribution. In a blog post, Yahoo VP of Software Engineering Eric Baldeschwieler writes that Yahoo will work more closely with Apache in the future. This leaves only two major distributions of Hadoop: Apache Hadoop and Cloudera's enterprise-focused Hadoop.
"Unfortunately, Apache is no longer the obvious place to go for Hadoop releases," writes Baldeschwieler. "The Yahoo! team wants to return to a world where anyone can download and directly use releases of Hadoop from Apache."