Amazon BDS-C00 Exam - Topic 5 Question 70 Discussion

Actual exam question for Amazon's BDS-C00 exam

Question #: 70
Topic #: 5

A large grocery distributor receives daily depletion reports from the field in the form of gzip archives of CSV files uploading to Amazon S3. The files range from 500MB to 5GB. These files are processes daily by an EMR job.

Recently it has been observed that the file sizes vary, and the EMR jobs take too long. The distributor needs to tune and optimize the data processing workflow with this limited information to improved the performance of the EMR job.

Which recommendation should an administrator provide?

AReduce the HDFS block size to increase the number of task processors

BUse bzip2 or Snappy rather than gzip for the archives

CDecompress the gzip archives and store the data as CSV files

DUse Avro rather than gzip for the archives

Show Suggested Answer

Suggested Answer: A

by Georgene at Feb 06, 2023, 10:49 AM

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Elfriede

4 months ago

Not sure if decompressing is the best move, seems counterproductive.

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Jerry

4 months ago

Reducing HDFS block size might help with parallel processing.

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Desiree

4 months ago

Wait, can Avro really make that much of a difference?

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Rosendo

4 months ago

Definitely agree with using Snappy for better performance!

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Cordie

4 months ago

I heard bzip2 is faster than gzip for big files.

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Stephanie

5 months ago

Using Avro instead of gzip seems like a solid option, especially for schema evolution, but I need to double-check if it would actually speed things up.

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Wai

5 months ago

Decompressing the files sounds like it could help, but I'm worried about the increased storage requirements.

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Yolando

5 months ago

I think I saw a similar question where reducing block size improved processing speed, but I can't recall the specifics.

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Anna

5 months ago

I remember something about file compression formats affecting performance, but I'm not sure if bzip2 or Snappy would really help here.

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Eva

5 months ago

The repeated IP address at hops 19 and 20 is interesting. I wonder if it could be a firewall or some kind of network device?

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Mona

5 months ago

Okay, I think I've got it. We want to give the security admin the ability to view the VPC details, but we don't want to share any credentials or give them full admin access. Option C or D looks like the way to go.

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Derick

5 months ago

Option D seems like the best choice here. The ability to test at scale and with realistic usage patterns is key for performance testing in the cloud.

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Caren

5 months ago

I feel pretty good about this. The key is understanding that blockchain is not a one-size-fits-all solution. The answer has to be C - these principles are valuable in some use cases but not in others.

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Stevie

5 months ago

I think downloading another update could be a good option, but I'm not sure if it's the right choice here.

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Sabrina

9 months ago

If I were the administrator, I'd be tempted to just throw more hardware at the problem. But I guess that's not a very creative solution, is it? Maybe I should stick to my day job as a standup comedian instead.

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Latricia

9 months ago

Avro is an interesting suggestion, but I wonder if the trade-offs of switching to a different file format would be worth it. It might be worth exploring, but I'd want to see some benchmarks first.

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Alisha

8 months ago

D: Decompressing the gzip files could also be a good idea to optimize the workflow.

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Karma

9 months ago

C: Avro could be worth considering, but we should definitely test it out first.

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Janna

9 months ago

B: Option A might also help speed up the processing time.

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Emelda

9 months ago

A: I think option B could be a good solution to improve performance.

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Lanie

10 months ago

Decompressing the gzip archives and storing the data as CSV files could work, but that might add more overhead to the process. I'd be curious to see if the performance benefits outweigh the extra steps.

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Ruthann

8 months ago

C: Decompress the gzip archives and store the data as CSV files

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Margot

9 months ago

B: Use bzip2 or Snappy rather than gzip for the archives

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Roselle

9 months ago

A: Reduce the HDFS block size to increase the number of task processors

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Goldie

10 months ago

Using bzip2 or Snappy could be a good option to reduce the file sizes and potentially improve the processing time. Gzip is a common compression format, but there might be better alternatives for these large files.

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Arlean

9 months ago

A) Reduce the HDFS block size to increase the number of task processors

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Blossom

9 months ago

C) Decompress the gzip archives and store the data as CSV files

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Sylvia

9 months ago

B) Use bzip2 or Snappy rather than gzip for the archives

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Alaine

11 months ago

Reducing the HDFS block size to increase the number of task processors seems like a logical solution, but I'm not sure if that's the best approach here. The file sizes are quite large, so the overhead of managing more tasks might outweigh the benefits.

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