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Thread: Hadoop short interview questions

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    Hadoop short interview questions

    Q1) Does Hadoop always require digital data to process?

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    Q2) On what basis Namenode will decide which datanode to write on?

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    Q3) Does Google have its very own version of DFS?

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    Q4) Who is a ‘user’ in HDFS?

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    Q5) Is client the end user in HDFS?

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    Q6) What is the communication channel between client and namenode/datanode?

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    Q7) Do we need to place 2nd and 3rd data in rack 2 only?

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    Q8) What is the difference between MapReduce engine and HDFS cluster?

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    Q9) Is map like a pointer?

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    Q10) Is a job split into maps?

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