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What is the scope of BIG DATA and Hadoop.?

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In 2018, the global Big Data and business analytics market stood at US$ 169 billion and by 2022, it is predicted to grow to US$ 274 billion. Moreover, a PwC report predicts that by 2020, there will be around 2.7 million job postings in Data Science and Analytics in the US alone.
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what should I know before learning hadoop?
It depends on which stream of Hadoop you are aiming at. If you are looking for Hadoop Core Developer, then yes you will need Java and Linux knowledge. But there is another Hadoop Profile which is in demand...
Tina

I want to take online classes on database/ ETL testing.

 

Also i look forward to teach Mathematics/Science for class X-XII

Both are co-related to each other but compare to DBA Jobs, ETL job is more demanding hence you take class for informatica tools and others.
Varsha
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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

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