What is the best way to learn Hadoop online and what are its prerequisites?

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If you want learn big data testing prequest is Oracle SQL knowledge and basic Unix scripting If you are planning to move as a big data developer, you should aware basics of core Java,SQL , Unix
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A friend of mine asked me which would be better, a course on Java or a course on big data or Hadoop. All I could manage was a blank stare. Do you have any ideas?
A course is bigdata will be more better. But honestly as a freshers getting a job in big data is little difficult. So my suggestion will be do a course on both java and bigdata, apply for job and what...
Srikumar
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5
Can anyone suggest about Hadoop?
Hadoop is good but it depends on your experience. If you don't know basic java, linux, shell scripting. Hadoop is not beneficial for you.
Ajay
Is there a list of the world's largest Hadoop clusters on the web?
No . As pf now Yahoo has tested with 5000 nodes . but there is no such information .
Nishant
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7

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