Confluent Exam CCDAK Topic 1 Question 51 Discussion

Actual exam question for Confluent's CCDAK exam

Question #: 51
Topic #: 1

[All CCDAK Questions]

In Avro, adding an element to an enum without a default is a __ schema evolution

Abreaking

Bfull

Cbackward

Dforward

Show Suggested Answer

Suggested Answer: A

Since Confluent 5.4.0, Avro 1.9.1 is used. Since default value was added to enum complex type , the schema resolution changed from:

(<1.9.1) if both are enums:** if the writer's symbol is not present in the reader's enum, then an error is signalled. **(>=1.9.1) if both are enums:

if the writer's symbol is not present in the reader's enum and the reader has a default value, then that value is used, otherwise an error is signalled.

by Cheryl at Apr 09, 2024, 07:07 PM

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Katlyn

6 months ago

I'm not sure, but I think it might be C) backward.

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Ming

6 months ago

Adding an element without a default can break compatibility with existing consumers, so I agree with option A) breaking.

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Adelina

6 months ago

No, I disagree. I believe it is D) forward.

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Lyla

6 months ago

I think the answer is A) breaking.

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Fabiola

6 months ago

I see David's point, but I still think C) backward is the best choice here.

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Leonida

6 months ago

I think it could also be D) forward, because you're adding new values to the enum.

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Karima

7 months ago

I agree with adding an element without a default is definitely C) backward schema evolution.

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Kenny

7 months ago

I disagree, I believe it's C) backward.

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Pedro

7 months ago

I think the answer is A) breaking.

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Wait, wait, wait...is this a trick question? I feel like there's gotta be a catch here. Maybe the answer is 'D) forward' because it's adding new functionality, even though it's technically a breaking change. Ugh, Avro schemas are the bane of my existence!

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Moon

8 months ago

Hah, classic Avro tricks! You know, I heard the exam writers have a secret club where they come up with these mind-bending questions. They probably have a dart board with all the answer options on it.

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Annelle

8 months ago

I'm not too sure about this one. Is it 'backward' because it's compatible with older clients, or 'forward' because it's adding new functionality? Decisions, decisions...

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Deonna

8 months ago

Okay, let's think this through. Adding an element to an enum without a default...that's gotta be a breaking change, right? I mean, you're introducing a new value that old clients won't know how to handle.

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Carmen

7 months ago

Exactly, it will break compatibility with existing clients.

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Dierdre

7 months ago

Yes, it is a breaking change because old clients won't recognize the new value.

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Lyda

8 months ago

Hmm, this one's tricky. I feel like I should know the answer, but my brain's just not clicking right now. Maybe I need to chug another cup of coffee before the exam.

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Edda

8 months ago

Ah, the old enum schema evolution conundrum! This is a classic trick question, I tell you. Gotta keep us on our toes, don't they?

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Confluent Exam CCDAK Topic 1 Question 51 Discussion

Contribute your Thoughts:

Katlyn

Ming

Adelina

Lyla

Fabiola

Leonida

Karima

Kenny

Pedro

Tommy

Moon

Annelle

Deonna

Carmen

Dierdre

Lyda

Edda