What is the best way to copy files between HDFS clusters?
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Name job control options specified by mapreduce.
Explain Working of MapReduce?
What is shuffling and sorting in Hadoop MapReduce?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
How to compress mapper output in Hadoop?
A number of combiners can be changed or not in MapReduce?
What is the need of MapReduce?
In Hadoop what is InputSplit?
Where sorting is done on mapper node or reducer node in MapReduce?
What is InputFormat in Hadoop MapReduce?
What is the role of a MapReduce partitioner?
Clarify what is shuffling in map reduce?
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