Hi , I want to make my career in HADOOP , but my problem is I am unable to write mapreduce reason is I don't know java. So, I want to know that what level of JAVA i should learn so I can write MAPREDUCE programmes

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Anuj Jain

Big Data Trainer

You need just core java to work on hadoop. Now a days nobody is writing map/reduce. In industries now map/reduce framework are used. You can learn them easily. Apache flink and spark both are good and easy to learn
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