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Hitachi Vantara HCE-5920 Exam - Topic 6 Question 11 Discussion

Actual exam question for Hitachi Vantara's HCE-5920 exam
Question #: 11
Topic #: 6
[All HCE-5920 Questions]

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?

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Suggested Answer: A

by Sharen at Jul 29, 2022, 02:56 PM

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Isaac
4 months ago
Totally agree, 1 reducer keeps it simple!
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Terrilyn
4 months ago
Wait, can you really set it to blank? That sounds weird.
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Celeste
4 months ago
Blank or 0 doesn't make sense for reducers.
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Shonda
4 months ago
I think 4 reducers could speed things up!
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Thea
4 months ago
Setting it to 1 is usually the best option for this.
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Merrilee
5 months ago
I’m confused about whether setting it to 0 would even allow the job to run, but I guess it could mean no reducers are used at all.
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Catalina
5 months ago
I'm not entirely sure, but I feel like setting it to 4 might be overkill for just four input files.
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Lore
5 months ago
I think I remember that setting the number of reducers to 1 is often a safe choice for simple tasks like counting words.
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Pamela
5 months ago
I practiced a similar question where we had to decide on reducer tasks, and I think leaving it blank could lead to default settings being applied.
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Audria
5 months ago
Whoa, a BSOD? That's not good. I better check the system error info and see if I can find the root cause.
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Alesia
5 months ago
Hmm, I'm not totally confident on this one. I'll have to review the OSPF requirements again.
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