What is a Speculative Execution in Hadoop MapReduce?


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More MapReduce Interview Questions

What is the problem with the small file in Hadoop?

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Explain Working of MapReduce?

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what is NameNode in Hadoop?

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what does the text input format do?

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what is WebDAV in Hadoop?

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Explain how mapreduce works.

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What is shuffling in mapreduce?

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Map reduce jobs take too long. What can be done to improve the performance of the cluster?

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

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When Namenode is down what happens to job tracker?

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Describe what happens to a mapreduce job from submission to output?

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What is the Reducer used for?

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