What do you mean by shuffling and sorting in MapReduce?
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Is it possible to search for files using wildcards?
What is RecordReader in a Map Reduce?
What is the difference between RDBMS with Hadoop MapReduce?
Explain what is distributed cache in mapreduce framework?
What comes in Hadoop 2.0 and MapReduce V2 YARN
What is the role of a MapReduce partitioner?
What does conf.setmapper class do?
Explain combiners.
What are the data components used by Hadoop?
What is OutputCommitter?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
Detail description of the Reducer phases?
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