what are the three modes in which Hadoop can be run?
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What are ‘maps’ and ‘reduces’?
what does the text input format do?
How do ‘map’ and ‘reduce’ work?
What is a TaskInstance?
What is optimal size of a file for distributed cache?
When is it suggested to use a combiner in a MapReduce job?
Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
What is the key- value pair in MapReduce?
What combiners are and when you should use a combiner in a mapreduce job?
What is the need of MapReduce?
What is the key- value pair in Hadoop MapReduce?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
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