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Apache Releases Hadoop 2.0: MapReduce, YARN and Big Changes for Big Data

Hadoop 2.0 is here, and with it come some big changes. The most notable, as detailed by a recent article from InfoWorld, is MapReduce 2.0, which is now incorporated into a larger system called YARN (Yet Another Resource Negotiator, explained in more detail here). Other changes include the following:

  • The JobTracker approach is no more.
  • Cross-compatibility with other Apache projects has been expanded.
  • Alternatives to MapReduce are available using YARN.

And despite all the changes, backwards compatibility has been retained. In general, Hadoop 2.0 looks to be a lot more flexible than the previous version, which may give it an even more central position in the evolution of Big Data. For a complete overview of the changes, take a look at InfoWorld's full article and see what may be in store for Big Data.

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