Define speculative execution?
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Define Writable data types in MapReduce?
How can you add the arbitrary key-value pairs in your mapper?
Explain about the partitioning, shuffle and sort phase in MapReduce?
What is the data storage component used by Hadoop?
How many numbers of reducers run in Map-Reduce Job?
Explain about the partitioning, shuffle and sort phase
How many Mappers run for a MapReduce job?
What does a split do?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
What is the Hadoop MapReduce API contract for a key and value Class?
What is MapReduce?
List the configuration parameters that have to be specified when running a MapReduce job.
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