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https://issues.apache.org/jira/browse/IGNITE-28736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Pavlov updated IGNITE-28736:
-----------------------------------
Labels: ise (was: )
> Preserve initial order of fields in BinaryType#fieldNames()
> -----------------------------------------------------------
>
> Key: IGNITE-28736
> URL: https://issues.apache.org/jira/browse/IGNITE-28736
> Project: Ignite
> Issue Type: Improvement
> Components: binary
> Reporter: Ravil Zakirov
> Priority: Minor
> Labels: ise
>
> h3. Description
>
> Currently, the method `BinaryType#fieldNames()` returns a
> `Collection<String>` without any guarantee of field order preservation. In
> practice, the order of fields as defined in the original class or schema is
> often lost, as the underlying implementation may use unordered collections
> (e.g., `HashSet`).
> However, in various use cases — such as data export, schema introspection,
> debugging, or integration with external systems — it is important to retain
> the **original declaration order** of fields. This helps maintain
> predictability and consistency, especially when field order has semantic
> meaning (e.g., in CSV/JSON serialization, UI rendering, or compatibility with
> other binary formats).
> h3. Suggested Implementation
>
> Ensure that during metadata registration in `BinaryTypeImpl` (or equivalent),
> field names are stored in a `LinkedHashSet` to preserve insertion order, and
> return them in that same order.
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