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...the R user a way to distribute commands over the Hadoop computing framework. The 0.1 release has one main command - rhlapply which is a parallel version of lapply. rhlapply outputs the results to Sequence files on the Hadoop Distributed Filesystem, and RHIPE comes with commands to read R objects fromthese Sequence files(a Hadoop file format). rhlapply has features to share files/load libraries/execute code on the cluster machines and collect side effect files. Since RHIPE uses Hadoop for distributing computation, it also benefits from Hadoops stability: load balancing and machine failure recovery b...