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What is the function of mapreduce partitioner?


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More MapReduce Interview Questions

How does fault tolerance work in mapreduce?

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How many Mappers run for a MapReduce job?

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What is the purpose of textinputformat?

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How is reporting controlled in hadoop?

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How data is spilt in Hadoop?

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What is a IdentityMapper and IdentityReducer in MapReduce ?

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If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?

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How to write a custom partitioner for a Hadoop MapReduce job?

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How do Hadoop MapReduce works?

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What are the advantages of using map side join in mapreduce?

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What is identity mapper and chain mapper?

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How to create custom key and custom value in MapReduce Job?

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