What is Mapper in Hadoop MapReduce?


No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More MapReduce Interview Questions

What are the identity mapper and reducer in MapReduce?

0 Answers  


What comes in Hadoop 2.0 and MapReduce V2 YARN

0 Answers  


Explain what combiners are and when you should use a combiner in a mapreduce job?

0 Answers  


what is Speculative Execution?

0 Answers  


Explain what is distributed cache in mapreduce framework?

0 Answers  


What do you understand by the term Straggler ?

0 Answers  


Explain the input type/format in mapreduce by default?

0 Answers  


Write a short note on the disadvantages of mapreduce

0 Answers  


If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?

0 Answers  


What is a MapReduce Combiner?

0 Answers  


Why is Apache Spark faster than Hadoop MapReduce?

0 Answers  


Explain about the partitioning, shuffle and sort phase in MapReduce?

0 Answers  


Categories