In the context of a MapReduce deployment in Hadoop, when there are several users and several MapReduce jobs to execute in the same shared infrastructure, there needs to be a scheduler deciding when to execute jobs and what resources to allocate to each one running.

From the following sentences, what is the one that best reflects how job scheduling in MapReduce takes place?

(select the option that best fits the question).

Question

In the context of a MapReduce deployment in Hadoop, when there are several users and several MapReduce jobs to execute in the same shared infrastructure, there needs to be a scheduler deciding when to execute jobs and what resources to allocate to each one running. 
  
 From the following sentences, what is the one that best reflects how job scheduling in MapReduce takes place?

(select the option that best fits the question).

Answer

The CapacityScheduler can guarantee prompt resources for shorter jobs as it maximizes overall cluster utilization.

Answer

The FIFO Scheduler may wait until a long job completes before executing a shorter job.

Answer

No response (no penalty if only option answered).

Answer

The FairScheduler reserves dedicated slots for jobs submitted to each queue.

Answer

The FIFO Scheduler reserves dedicated slots for jobs submitted to each queue.

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In the context of a MapReduce deployment in Hadoop, when there are several users...

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