What is the job of blend () and repartition () in Map Reduce?


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More MapReduce Interview Questions

In mapreduce what is a scarce system resource? Explain?

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What are the various configuration parameters required to run a mapreduce job?

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How many Mappers run for a MapReduce job in Hadoop?

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what is a Task Tracker in Hadoop?

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How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

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How would you tackle calculating the number of unique visitors for each hour by mining a huge apache log? You can use post processing on the output of the mapreduce job.

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In Hadoop, which file controls reporting in Hadoop?

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How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?

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What is the problem with the small file in Hadoop?

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Why is output file name in Hadoop MapReduce part-r-00000?

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What is a IdentityMapper and IdentityReducer in MapReduce ?

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What is shuffling and sorting in mapreduce?

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