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What is the utility of using Writable Comparable Custom Class in Map Reduce code?


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More MapReduce Interview Questions

Clarify what is shuffling in map reduce?

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What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?

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How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?

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What do you understand by compute and storage nodes?

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How do reducers communicate with each other?

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What is partitioning in MapReduce?

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Explain the Reducer's reduce phase?

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What is streaming?

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

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Explain job scheduling through JobTracker

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Explain JobConf in MapReduce.

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What do you mean by data locality?

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