Define the Use of MapReduce?
Whether the output of mapper or output of partitioner written on local disk?
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
Explain the process of spilling in MapReduce?
What is LazyOutputFormat in MapReduce?
What is Output Format in MapReduce?
Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
What are the identity mapper and reducer in MapReduce?
How to optimize Hadoop MapReduce Job?
How to specify more than one directory as input in the Hadoop MapReduce Program?
How to change the name of the output file from part-r-00000 in Hadoop MapReduce?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
What is the relation between MapReduce and Hive?
