What is MapReduce?
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Answer / bindu
It is data processing layer of hadoop.map and reduce are the two tasks for processing data in hadoop.
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What is the role of recordreader in hadoop mapreduce?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
How many numbers of reducers run in Map-Reduce Job?
What do sorting and shuffling do?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
Detail description of the Reducer phases?
List the configuration parameters that have to be specified when running a MapReduce job.
What are the various configuration parameters required to run a mapreduce job?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
List out Hadoop's three configuration files?
What are the data components used by Hadoop?
Write a short note on the disadvantages of mapreduce
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