What does a split do?
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What is the utility of using Writable Comparable Custom Class in Map Reduce code?
What happens when a DataNode fails during the write process?
How is reporting controlled in hadoop?
What is a Distributed Cache in Hadoop?
What are the main components of MapReduce Job?
Clarify what is shuffling in map reduce?
Describe what happens to a mapreduce job from submission to output?
Explain what does the conf.setmapper class do?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
What MapReduce framework consists of?
mapper or reducer?
How to compress mapper output in Hadoop?
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