Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 223 discussion

"user-specified custom attributes" means custom annotations

A is the correct answer.

https://docs.aws.amazon.com/xray/latest/devguide/xray-sdk-java-segment.html#:~:text=Annotations%20are%20key%2Dvalue%20pairs%20with%20string%2C%20number%2C%20or%20Boolean%20values.%20Annotations%20are%20indexed%20for%20use%20with%20filter%20expressions.%20Use%20annotations%20to%20record%20data%20that%20you%20want%20to%20use%20to%20group%20traces%20in%20the%20console%2C%20or%20when%20calling%20the%20GetTraceSummaries%20API.

Annotations in AWS X-Ray are key-value pairs that are indexed for use with filter expressions. This means that you can use annotations to add custom attributes to your trace data, which can then be queried using X-Ray filter expressions. Annotations are used for values that you want to use for searching, filtering, or creating groups. By adding these custom attributes as annotations, the developer can effectively use filter expressions to limit the returned results based on these attributes.

https://docs.aws.amazon.com/xray/latest/devguide/xray-sdk-java-segment.html filter expressions => annotations

Annotations are indexed, used for filtering, unlike metadata

If you add annotations with the X-Ray SDK, you can also filter based on the presence of an annotation key or the value of a key. https://docs.aws.amazon.com/xray/latest/devguide/xray-console-filters.html

To filter the results in AWS X-Ray using custom attributes, the developer should add custom attributes as annotations in the segment document.

B. Add custom attributes as metadata in the segment document. Custom attributes are best added as metadata in the segment document because X-Ray filter expressions can use metadata to filter traces. Annotations and new segment fields are not typically used for filtering traces in this context.

B. Add custom attributes as metadata in the segment document. Custom attributes are best added as metadata in the segment document because X-Ray filter expressions can use metadata to filter traces. Annotations and new segment fields are not typically used for filtering traces in this context.