What is partioner in hadoop? Where does it run,mapper or reducer?
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What is the purpose of RawComparator interface?
how would you modify that solution to only count the number of unique words in all the documents?
Define fault tolerance?
What is MapFile?
Which are the two types of 'writes' in HDFS?
Explain how do ‘map’ and ‘reduce’ works?
Explain use cases where SequenceFile class can be a good fit?
What is zookeeper in hadoop?
what factors the block size takes before creation?
Is hadoop based on google mapreduce?
How to resolve small file problem in hdfs?
How to change Replication Factor For below cases ?