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What is the key- value pair in Hadoop MapReduce?


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More MapReduce Interview Questions

Define Writable data types in Hadoop MapReduce?

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Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?

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What is the difference between HDFS block and input split?

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What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?

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Can we submit the mapreduce job from slave node?

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Explain the Reducer's reduce phase?

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What is a TaskInstance?

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How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?

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How to configure the number of the Combiner in MapReduce?

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What are the four essential parameters of a mapper?

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What is partitioning in MapReduce?

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Mention what is the next step after mapper or maptask?

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