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Pig, Hive, and Jaql have much in common. They all translate high-level languages into MapReduce jobs. There are few key differences among those,which help you understand much better of these high level languages.
Hadoop was originally built by a Yahoo! engineer named Doug Cutting and is now an open source project managedby the Apache Software Foundation. Read more.
What is MapReduce in Hadoop. Read now complete Process and its components.
Critical skills for data analytics career the number one is ability to analyse complex data sets. Along with this skills you need top technical skills.