Confluent Exam CCDAK Topic 4 Question 71 Discussion

Actual exam question for Confluent's CCDAK exam

Question #: 71
Topic #: 4

[All CCDAK Questions]

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

Abreaking

Bfull

Cbackward

Dforward

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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 Cecil at Dec 11, 2024, 06:11 AM

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Coletta

4 days 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 applications to read the new enum values but older applications can still read the existing values.

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