Explain about the basic parameters of mapper and reducer function
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what is distributed cache in mapreduce framework?
When should you use a reducer?
Define Writable data types in Hadoop MapReduce?
How to set which framework would be used to run mapreduce program?
What is Mapper in Hadoop MapReduce?
Why comparison of types is important for MapReduce?
What is an input reader in reference to mapreduce?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
What is a RecordReader in Hadoop MapReduce?
How to set the number of mappers for a MapReduce job?
What are the identity mapper and reducer in MapReduce?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
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