[BEAM-3003] In WithKeys, get coder for key more safely.

• Type: Improvement
• Status: Open
• Priority: P3
• Resolution: Unresolved
• Component/s: sdk-java-core
• Labels: Clarified starter
• Assignee: Unassigned
• Reporter: Daniel Oliveira
• Created: 29/Sep/17 20:55
• Updated: 03/Jun/22 19:19

Description

In WithKeys.java currently the coder for the key type is chosen when the transform is expanded. This means that there's no way to directly get the type of the input elements, instead the type is inferred from the function or from a java Class<> object. This means there can be mismatches between the actual type of the input and the coder used.

WithKeys should be refactored to retrieve the coder in a safer way and avoid the possibility of mismatches.