What is the core of the job in MapReduce framework?
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Why comparison of types is important for MapReduce?
Mention what is the next step after mapper or maptask?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
how JobTracker schedules a task ?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is a MapReduce Combiner?
What is the use of InputFormat in MapReduce process?
What is a RecordReader in Hadoop MapReduce?
What is the difference between a MapReduce InputSplit and HDFS block?
What is a partitioner and how the user can control which key will go to which reducer?
what job does the conf class do?
How to set mappers and reducers for MapReduce jobs?
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