Which are the methods in the mapper interface?
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What is Text Input Format?
List out Hadoop's three configuration files?
What is Combiner in MapReduce?
How do you stop a running job gracefully?
What is optimal size of a file for distributed cache?
Explain what combiners are and when you should use a combiner in a mapreduce job?
Why MapReduce uses the key-value pair to process the data?
How to specify more than one directory as input in the Hadoop MapReduce Program?
Can you tell us how many daemon processes run on a hadoop system?
what is a Task Tracker in Hadoop?
what does the text input format do?
What do you mean by data locality?
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