Explain the master class and the output class do?
how would you modify that solution to only count the number of unique words in all the documents?
Did you ever ran into a lop sided job that resulted in out of memory error
What is the main purpose of HDFS fsck command?
Is hadoop based on google mapreduce?
What is the difference between Hadoop and Traditional RDBMS?
Explain how do ‘map’ and ‘reduce’ works?
Name some companies that use Hadoop?
What is hadoop framework?
Is it necessary to know java to learn hadoop?
Explain the features of pseudo mode?
What is IdentityMapper?
Does Hadoop requires RAID?