Conventions Used in This BookUsing Code ExamplesSafari® Books OnlineHow to Contact UsAcknowledgmentsQ. Ethan McCallumStephen Weston Why R?Why Not R?The Solution: Parallel ExecutionA Road Map for This BookWhat We’ll CoverLooking Forward…What We’ll Assume You Already KnowIn a Hurry?snowmulticoreparallelR+HadoopRHIPESegueSummary Quick LookHow It WorksSetting UpWorking with ItCreating Clusters with ma