What is a Hadoop ecosystem?

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Apache Hadoop ecosystem refers to the various components of the Apache Hadoop software library; it includes open source projects as well as a complete range of complementary tools.
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Is an mba persuing student eligible for persuing hadoop course?
Yes there are some institutes are offering courses on big data . Those are like MBA in analytics. Google it you will find more info
Osheen
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What is the speculative execution in hadoop?
Speculative execution in Hadoop is a process of running duplicate tasks on different nodes to finish the job faster by using the result from the task that completes first.
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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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