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Can you explain combiner?


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More Hadoop General Interview Questions

Compare Apache Hadoop and Apache Spark?

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Can you explain combiner?

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Can you define a checkpoint?

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Which object can be used to get the progress of a particular job

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What is the basic difference between traditional RDBMS and Hadoop?

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What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

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Explain how jobtracker schedules a task?

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what happens when namenode goes down during file read operation in hadoop?

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Name the most common Input Formats defined in Hadoop? Which one is default?

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Who are ‘Data Scientists’?

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