How hadoop mapreduce works?
What do you understand by mapreduce?
What is a "reducer" in Hadoop?
What is the InputSplit in map reduce ?
What is the purpose of textinputformat?
What do you know about nlineinputformat?
Explain task granularity
What is the fundamental difference between a MapReduce InputSplit and HDFS block?
What is SequenceFileInputFormat in Hadoop MapReduce?
How does inputsplit in mapreduce determines the record boundaries correctly?
What are advantages of Spark over MapReduce?
How to compress mapper output in Hadoop?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?