how indexing in HDFS is done?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
what is distributed cache in mapreduce framework?
Which are the methods in the mapper interface?
What are the four essential parameters of a mapper?
Explain about the basic parameters of mapper and reducer function
Why do we need MapReduce during Pig programming?
What is Hadoop Map Reduce ?
What is difference between an input split and hdfs block?
Explain what you understand by speculative execution
What is Reducer in MapReduce?
how to proceed to write your first mapreducer program?
What is the relation between MapReduce and Hive?