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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

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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
8 months ago
I'm not sure, but I think it might be C) backward.
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Ming
8 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
8 months ago
No, I disagree. I believe it is D) forward.
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Lyla
9 months ago
I think the answer is A) breaking.
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Fabiola
9 months ago
I see David's point, but I still think C) backward is the best choice here.
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Leonida
9 months ago
I think it could also be D) forward, because you're adding new values to the enum.
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Karima
9 months ago
I agree with adding an element without a default is definitely C) backward schema evolution.
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Kenny
10 months ago
I disagree, I believe it's C) backward.
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Pedro
10 months ago
I think the answer is A) breaking.
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Tommy
11 months ago
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
11 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
11 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
11 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
10 months ago
Exactly, it will break compatibility with existing clients.
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Dierdre
10 months ago
Yes, it is a breaking change because old clients won't recognize the new value.
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Lyda
11 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
11 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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