What is partioner in hadoop? Where does it run,mapper or reducer?


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More Apache Hadoop Interview Questions

What is the purpose of RawComparator interface?

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how would you modify that solution to only count the number of unique words in all the documents?

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Define fault tolerance?

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What is MapFile?

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Which are the two types of 'writes' in HDFS?

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Explain how do ‘map’ and ‘reduce’ works?

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Explain use cases where SequenceFile class can be a good fit?

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What is zookeeper in hadoop?

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what factors the block size takes before creation?

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Is hadoop based on google mapreduce?

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How to resolve small file problem in hdfs?

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How to change Replication Factor For below cases ?

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