Is learning HADOOP/BIG DATA difficult? I don't have the knowledge of core java?

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Java is not important nowadays to learn Big Data. We have trained people from non Java background and they are now working as Big Data Developer
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How do I switch from QA to Big Data Hadoop while having little knowledge of Java?
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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.
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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?
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