Priyesh K created HDDS-15452:
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Summary: Refactor DataNodeMetricsServiceResponse to separate
In-Progress and Completed API Payloads
Key: HDDS-15452
URL: https://issues.apache.org/jira/browse/HDDS-15452
Project: Apache Ozone
Issue Type: Improvement
Components: Ozone Recon
Reporter: Priyesh K
Assignee: Priyesh K
*Problem:* The {{/storageDistribution/download}} API exposes messy {{null}}
metric arrays while background collection is still {{{}IN_PROGRESS{}}}.
*Solution:* Split the response DTO into a clean inheritance hierarchy to
decouple processing states:
* *Base:* Core telemetry ({{{}status{}}}, node counts).
* *Progress Subclass:* Drops metric arrays; adds a user-friendly
{{{}message{}}}.
* *Complete Subclass:* Appends metric data payloads only upon success.
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