In which scenario would you use Hadoop over Spark?

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mapreduce is very slow if the amount of the data is very large... then we use spark as it is very fast
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Hello, I have completed B.com , MBA fin & M and 5 yr working experience in SAP PLM 1 - Engineering documentation management 2 - Documentation management Please suggest me which IT course suitable to my career growth and scope in market ? Thanks.
If you think you are strong in finance and costing, I would suggest you a SAP FICO course which is definitely always in demand. if you have an experience as a end user on SAP PLM / Documentation etc, even a course on SAP PLM DMS should be good.
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How do I switch from QA to Big Data Hadoop while having little knowledge of Java?
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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.
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what should I know before learning hadoop?
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What does the term "data locality" mean in Hadoop?
Data locality in Hadoop refers to the practice of processing data on the same node where it is stored, reducing network traffic and improving performance.
Sabna
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