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What is a RecordReader in Hadoop MapReduce?
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How to configure the number of the Combiner in MapReduce?
How do reducers communicate with each other?
What are the various input and output types supported by mapreduce?
What is identity mapper and reducer? In which cases can we use them?
What is the default input type in MapReduce?
how to proceed to write your first mapreducer program?
Clarify what is shuffling in map reduce?
How to optimize Hadoop MapReduce Job?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
How can we control particular key should go in a specific reducer?
Can you tell us how many daemon processes run on a hadoop system?
Explain the difference between a MapReduce InputSplit and HDFS block?
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