Hitachi Vantara Exam HCE-5920 Topic 1 Question 54 Discussion

Actual exam question for Hitachi Vantara's HCE-5920 exam

Question #: 54
Topic #: 1

You have a job that uses a Pentaho MapReduce entry to read four input files, and that outputs words and their counts to one output file.

How should you set the number of reducer tasks?

ASet it to blank.

BSet it to 0.

CSet it to 1.

DSet it to 4.

Show Suggested Answer

Suggested Answer: A

by Anna at Sep 13, 2024, 01:44 PM

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Buck

2 months ago

Hold up, I've got a better idea. Why not just set it to over 9000? That's gotta be the answer, right? Haha!

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Tabetha

2 months ago

I'm not sure about this one. I'd say C, just to be safe. You don't want to overload the system with too many reducer tasks, right?

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Johnetta

21 days ago

C) Set it to 1.

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Laurene

22 days ago

B) Set it to 0.

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Mozell

30 days ago

A) Set it to blank.

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Tina

2 months ago

I think the answer should be D. It makes sense to have the same number of reducer tasks as the number of input files.

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Afton

29 days ago

I think the answer should be D. It makes sense to have the same number of reducer tasks as the number of input files.

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Giovanna

1 months ago

D) Set it to 4.

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Wenona

1 months ago

C) Set it to 1.

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Vallie

1 months ago

B) Set it to 0.

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Madalyn

2 months ago

A) Set it to blank.

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Inocencia

2 months ago

But setting it to 4 would allow for parallel processing and faster execution.

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Dean

2 months ago

I disagree, I believe the answer is C) Set it to 1.

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Inocencia

2 months ago

I think the answer is D) Set it to 4.

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