What is difference between an input split and hdfs block?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
What are the advantages of using mapreduce with hadoop?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
Is it necessary to write a mapreduce job in java?
What is Distributed Cache in the MapReduce Framework?
What is a IdentityMapper and IdentityReducer in MapReduce ?
How many Mappers run for a MapReduce job in Hadoop?
Explain the Reducer's reduce phase?
What are the key differences between Pig vs MapReduce?
what does the text input format do?
what is "map" and what is "reducer" in Hadoop?
What are the various InputFormats in Hadoop?