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For a job in Hadoop, is it possible to change the number of mappers to be created?


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More MapReduce Interview Questions

How much space will the split occupy in Mapreduce?

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How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?

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What is heartbeat in hdfs?

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What is the data storage component used by Hadoop?

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

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Explain about the partitioning, shuffle and sort phase

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A number of combiners can be changed or not in MapReduce?

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Explain what does the conf.setmapper class do?

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How to set mappers and reducers for MapReduce jobs?

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What is shuffling in mapreduce?

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In Hadoop, which file controls reporting in Hadoop?

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List the network requirements for using Hadoop ?

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