What is the significance of Hadoop's speculative execution in a job with multiple reducers?

What is the significance of Hadoop's speculative execution in a job with multiple reducers? Correct Answer It helps in load balancing across reducers

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Related Questions

Which of the following statements is most relevant in the context of Job Analysis? Choose the correct answer from the code given below. (i) Job Analysis helps in identifying the right person for the right job. (ii) A person cannot judge the job from the point of view of its suitability. (iii) Job analysis helps in job satisfaction and job efficiency. (iv) Through Job Analysis an employer cannot evaluate the prospective employee to judge his fitness or otherwise for the job. (v) Job Analysis helps in planning appropriate training programs. (vi) Job Analysis defines client needs in specific terms. (vii) Job Analysis assists in knowing the personnel specifications for various jobs.
A computer has 1000K of main memory. The jobs arrive and finish in the following sequence. Job 1 requiring 200 K arrives Job 2 requiring 350 K arrives Job 3 requiring 300 K arrives Job 1 finishes Job 4 requiring 120 K arrives Job 5 requiring 150 K arrives Job 6 requiring 80 K  arrives Among best fit and first fit, which performs better for this sequence?
Which of the following statement is/are true?
1. Job analysis is the process of getting information about job.
2. Job analysis indicates the specific duties to be performed by the worker and the circumstance under which these duties are to be performed
3. A job description is a written record of the duties, responsibilities and conditions of the job.
4. The objective of job evaluation is to price the job rather than the man.
5. The objective of cost management is a product design.
Job design means assigning the following tasks of a job to be performed by a worker in his daily routine: I. Job enlargement is the horizontal loading of workers job II. Job rotation is interchanging amongst workers after a suitable interval of time. III. Job enrichment means giving additional responsibilities to workers who are more dignified. Which of the statements given above are correct?
Two machines M1 and M2 are able to execute any of four jobs P, Q, R and S. The machines can perform one job on one object at a time. Jobs P, Q, R and S take 30 minutes, 20 minutes, 60 minutes and 15 minutes each respectively. There are 10 objects each requiring exactly 1 job. Job P is to be performed on 2 objects. Job Q on 3 objects, Job R on 1 object and Job S on 4 objects. What is the minimum time needed to complete all the jobs?
A shopkeeper has a job to print certain number of documents and there are three machines P, Q and R for this job. P can complete the job in 3 days, Q can complete the job in 4 days and R can complete the job in 6 days. How many days the shopkeeper will it take to complete the job if all the machines are used simultaneously ?
Which of the following statements are true?
1. HRP facilitates international expansion strategies.
2. Job analysis helps in understanding duties and responsibilities of a job by drawing attention to a unit of work and its linkage with other units of work.
3. Job description is developed from job specification.
4. Job description describes the knowledge, skills and education experience which is essential to perform a job.
Choose the correct statements
1. Job-evaluation is used to determine compensation.
2. Job-induction is not a type of training.
3. Job-enrichment is referred to as vertical job loading.
4. Job-enlargement is referred to as vertical job loading.
Which of the statements given above are correct?
In advanced MapReduce, what is the significance of the Hadoop MapReduce "MapReduce speculative execution"?
In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. "Jim Crow" shuns the mountains for reasons satisfactory to himself; not so the magpie, the raven, and __________ mischief-maker, Clark's nutcracker. All of which keeps the bird-lover from the East in an ecstasy of surprises until he has _____________ accustomed to his changed environment. One cannot help ___________ into the speculative mood in view of the sharp contrasts ______________ the birds of the East and _________ of the West.
One cannot help ___________ into the speculative mood