What is MapReduce?
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Answer / bindu
It is data processing layer of hadoop.map and reduce are the two tasks for processing data in hadoop.
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What is the default input type in MapReduce?
What are the key differences between Pig vs MapReduce?
What are the main components of MapReduce Job?
Why do we need MapReduce during Pig programming?
What is the difference between a MapReduce InputSplit and HDFS block?
Explain what are the basic parameters of a mapper?
how JobTracker schedules a task ?
What is the Hadoop MapReduce API contract for a key and value Class?
When the reducers are are started in a mapreduce job?
How do reducers communicate with each other?
List the configuration parameters that have to be specified when running a MapReduce job.
What is the data storage component used by Hadoop?
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