CHAPTER 10
ETL with Hadoop
Given that Hadoop-based Map Reduce programming is a relatively new skill, there is likely to be a shortage of highly skilled staff for some time, and those skills will come at a premium price. ETL (extract, transform, and load) tools, like Pentaho and Talend, offer a visual, component-based method to create Map Reduce jobs, allowing ETL chains to be created and manipulated as visual objects. Such tools are a simpler and quicker way for staff to approach Map Reduce programming. I’m not suggesting that they are a replacement for Java or Pig-based code, but as an entry point they offer a great deal of pre-defined functionality ...
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