Hortonworks Exam HDPCD Topic 3 Question 53 Discussion

Actual exam question for Hortonworks's HDPCD exam

Question #: 53
Topic #: 3

You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and #data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?

AFour, all files will be processed

BThree, the pound sign is an invalid character for HDFS file names

CTwo, file names with a leading period or underscore are ignored

DNone, the directory cannot be named jobdata

EOne, no special characters can prefix the name of an input file

Show Suggested Answer

Suggested Answer: C

Files starting with '_' are considered 'hidden' like unix files starting with '.'.

# characters are allowed in HDFS file names.

by Valentin at Apr 14, 2024, 01:50 PM

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Richelle

7 months ago

I think the correct answer is B. The pound sign is indeed an invalid character, so only three files will be processed.

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Krissy

7 months ago

But what about E? Could it be just one file processed due to the naming restriction?

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Annmarie

8 months ago

I'm leaning towards B, since the pound sign is not allowed in file names.

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Remona

8 months ago

I disagree, I believe the answer is C because files with leading periods or underscores are ignored.

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Krissy

8 months ago

I think the answer is A, all four files will be processed.

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Thea

8 months ago

I think the correct answer is E) One, no special characters can prefix the name of an input file.

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Mee

8 months ago

I'm not sure, but I think the answer might be C) Two, file names with a leading period or underscore are ignored.

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Daniel

9 months ago

I disagree, I believe the answer is B) Three, the pound sign is an invalid character for HDFS file names.

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Kristel

9 months ago

I think the answer is A) Four, all files will be processed.

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Quentin

10 months ago

Okay, let's think this through step-by-step. HDFS file names, special characters, hidden files... I think I've got this. *rubs hands together*

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Mila

10 months ago

Ugh, this is the kind of question that makes me wish I had a cheat sheet handy. I'm going to have to rely on my instincts and pray I don't mess this up.

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Alberta

10 months ago

I don't know, I kind of like these types of questions. It shows they're really testing our understanding of the underlying system. I'm going to give it my best shot.

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Ammie

8 months ago

B) Three, the pound sign is an invalid character for HDFS file names

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Vinnie

8 months ago

C) Two, file names with a leading period or underscore are ignored

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Lashaunda

8 months ago

A) Four, all files will be processed

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Iola

10 months ago

Oh man, I hate questions like this! It's like they're testing our knowledge of HDFS arcane rules rather than our actual skills. Can't they just ask us something more straightforward?

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Earleen

10 months ago

Hmm, I think it's a valid question, but it feels a bit like they're trying to trip us up with the file naming conventions. I'm going to have to really think this through.

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Nan

10 months ago

Wow, this is a tricky one! I'm not sure if I should be impressed or terrified by the complexity of this question.

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