MINOR: Document top-level-only field casting limitation in Cast SMT#22697
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itsmehotpants wants to merge 1 commit into
Open
MINOR: Document top-level-only field casting limitation in Cast SMT#22697itsmehotpants wants to merge 1 commit into
itsmehotpants wants to merge 1 commit into
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The Cast SMT only supports casting top-level fields. This was noted in an internal TODO comment but was absent from the user-visible OVERVIEW_DOC and spec ConfigDef description, causing confusion when users attempt dotted-path nested field specs. Surfaces the limitation in: - OVERVIEW_DOC (shown in docs site and connector UIs) - spec ConfigDef description (shown in validation errors) Documentation strings only; no logic or API change.
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Motivation
The
CastSMT only supports top-level fields. Nested field casting via dotted notation (e.g.outer.inner:int32) is not supported. This was noted in an internal TODO comment but never surfaced to users.Changes
connect/transforms/src/main/java/org/apache/kafka/connect/transforms/Cast.javaOVERVIEW_DOC: note that only top-level fields are supportedspecConfigDef description: same clarificationDocumentation strings only. No logic, behaviour, or API change.
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