Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
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Explain how mapreduce works.
When the reducers are are started in a mapreduce job?
Is YARN a replacement of Hadoop MapReduce?
What is identity mapper and chain mapper?
What is the difference between RDBMS with Hadoop MapReduce?
How do reducers communicate with each other?
What is Shuffling and Sorting in a MapReduce?
What is the inputsplit in map reduce software?
How does MapReduce framework view its input internally?
What is the role of a MapReduce partitioner?
What is the next step after Mapper or MapTask?
Is it important for Hadoop MapReduce jobs to be written in Java?
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