Explain task granularity
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What is the role of recordreader in hadoop mapreduce?
What is an input reader in reference to mapreduce?
What is Data Locality in Hadoop?
What is Shuffling and Sorting in a MapReduce?
In MapReduce Data Flow, when Combiner is called?
What is the function of mapreducer partitioner?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
Is reduce-only job possible in Hadoop MapReduce?
What is the input type/format in MapReduce by default?
What is shuffling and sorting in mapreduce?
When is it not recommended to use MapReduce paradigm for large scale data processing?
Is it necessary to write a mapreduce job in java?
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