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What is difference between an input split and hdfs block?
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A number of combiners can be changed or not in MapReduce?
What are ‘reduces’?
For a Hadoop job, how will you write a custom partitioner?
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
What is the job of blend () and repartition () in Map Reduce?
What is SequenceFileInputFormat in Hadoop MapReduce?
what are the basic parameters of a Mapper?
What is Combiner in MapReduce?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
What are the various configuration parameters required to run a mapreduce job?
Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
What is the relationship between Job and Task in Hadoop?
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