Un-Answered Questions { MapReduce }

Illustrate a simple example of the working of MapReduce.

384


For a Hadoop job, how will you write a custom partitioner?

403


what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

416


what is the Hadoop MapReduce APIs contract for a key and value class?

415


When is it suggested to use a combiner in a MapReduce job?

389


What is the process of changing the split size if there is limited storage space on Commodity Hardware?

412


how Hadoop is different from other data processing tools?

384


List the configuration parameters that have to be specified when running a MapReduce job.

370


what is a sequence file in Hadoop?

413


What are the key differences between Pig vs MapReduce?

360


When is it not recommended to use MapReduce paradigm for large

371


what happens in textinformat ?

395


Explain the differences between a combiner and reducer

386


What is a TaskInstance?

403


What is the default input type in MapReduce?

391