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Hadoop in the enterprise: How to start small and grow to success by Paul Miller:
Hadoop-based solutions are increasingly encroaching on the traditional systems that still dominate the enterprise-IT landscape. While Hadoop has proved its worth, neither its wholesale replacement of existing systems nor the expensive and unconstrained build-out of a parallel and entirely separate IT stack make good sense for most businesses. Instead, Hadoop should normally be deployed alongside existing IT and within existing processes, workflows, and governance structures. Rather than initially embarking on a completely new project in which return on investment may prove difficult to quantify, there is value in identifying existing IT tasks that Hadoop may demonstrably perform better than the existing tools. ELT offload from the traditional enterprise data warehouse (EDW) represents one clear use case in which Hadoop typically delivers quick and measurable value, familiarizing enterprise-IT staff with the tools and their capabilities, persuading management of their demonstrable value, and laying the groundwork for more-ambitious projects to follow. This paper explores the pragmatic steps to be taken in introducing Hadoop into a traditional enterprise-IT environment, considers the best use cases for early experimentation and adoption, and discusses the ways Hadoop can then move toward mainstream deployments as part of a sustainable enterprise-IT stack.
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