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In fact, there was such a strong desire to know more coupled with a (absolutely not picking on anyone here!) big void of skills in the field. It reminded me of when many folks where getting excited about internet development in the mid-90s and then Java in the late-90s. That excitement is contagious!! And to stick with the internet and Java comparisons, I'm absolutely sure Hadoop and all the current (and upcoming) ecosystem tools are here to stay.
It is also crystal clear that hadoop yarn (in a nutshell) offers so much more extensibility and control going forward. Hortonworks gave a good now/soon/eventually presentation on YARN that was one of the most informative of the event for me personally. I really like the quote I heard them say; "YARN is the OS of the Hadoop cluster". This really is cool technology and decoupling the workload type from MapReduce is a giant step forward. I'm embedding their presentation next (click on down arrow in lower left of the preview tab to download it).
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