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Confluent Exam CCDAK Topic 2 Question 61 Discussion

Actual exam question for Confluent's CCDAK exam
Question #: 61
Topic #: 2
[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 Abraham at Aug 05, 2024, 04:28 AM

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Ulysses
6 months ago
Gotta be B. Full schema evolution is the only way to ensure our data stays pristine, right? Anything else is just asking for trouble.
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Gracia
5 months ago
C) backward
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Valentine
5 months ago
D) forward
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Catarina
5 months ago
B) full
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Herman
5 months ago
C) backward
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Jina
6 months ago
B) full
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Lucina
6 months ago
A) breaking
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Leonor
6 months ago
A) breaking
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Winfred
6 months ago
Hmm, I'm not so sure. This seems more like a full schema evolution to me. Avro is tricky, man.
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James
6 months ago
No, I believe it's a forward schema evolution.
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Gail
6 months ago
I think it's a breaking schema evolution.
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Fausto
7 months ago
I agree with Lanie, C) backward makes more sense in this context.
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Lanie
7 months ago
No, I believe it's C) backward because adding an element without a default is not breaking the existing schema.
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Phung
7 months ago
I think the answer is A) breaking.
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Nana
7 months ago
Definitely C. Backward schema evolution is the way to go here. We don't want to break existing applications, do we?
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Yvonne
7 months ago
I think the answer is D. Adding an element to an enum without a default is a forward schema evolution, as it allows new consumers to read the new enum values but maintains compatibility with older consumers.
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Rosalia
6 months ago
Exactly, it allows new consumers to read new enum values.
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Christa
6 months ago
So, the answer is D, forward.
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Pete
6 months ago
It's important to maintain compatibility with older consumers.
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Hester
6 months ago
I agree, adding an element without a default is a forward schema evolution.
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