List the network requirements for using Hadoop ?
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Explain the input type/format in mapreduce by default?
Why MapReduce uses the key-value pair to process the data?
List the configuration parameters that have to be specified when running a MapReduce job.
what is distributed cache in mapreduce framework?
How to specify more than one directory as input in the Hadoop MapReduce Program?
what are the basic parameters of a Mapper?
How many Reducers run for a MapReduce job?
How to create a custom key and custom value in MapReduce Job?
What combiners are and when you should use a combiner in a mapreduce job?
What is MapReduce?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
what is "map" and what is "reducer" in Hadoop?
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