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Q: 

How to use Ruby CLI client to launch a JobFlow based on a JSON JobFlow description on Amazon Elastic MapReduce.

I have written a mapreduce application for hadoop and tested it at the command line on a single machine. My application uses two steps Map1 -> Reduce1 -> Map2 -> Reduce2 To run this job on aws mapreduce, I am following this link http://aws.amazon.com/articles/2294. But I am not clear how to use Ruby CLI client provide by amazon to do all the work described. Please guide.

Thanks.

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