What is the utility of using Writable Comparable Custom Class in Map Reduce code?
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Clarify what combiners are and when you should utilize a combiner in a map reduce job?
Explain task granularity
Define MapReduce?
What is the best way to copy files between HDFS clusters?
What is an input reader in reference to mapreduce?
How to set the number of mappers to be created in MapReduce?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
When is it not recommended to use MapReduce paradigm for large scale data processing?
what daemons run on a master node and slave nodes?
Define Writable data types in MapReduce?
What do you understand by compute and storage nodes?
What do you know about nlineinputformat?