How many InputSplits is made by a Hadoop Framework?
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What are the four essential parameters of a mapper?
Why is output file name in Hadoop MapReduce part-r-00000?
How many numbers of reducers run in Map-Reduce Job?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
What is shuffling and sorting in Hadoop MapReduce?
How do you stop a running job gracefully?
What is identity mapper and reducer? In which cases can we use them?
Explain the Reducer's Sort phase?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
What are the various configuration parameters required to run a mapreduce job?
What is the role of a MapReduce partitioner?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
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