Hi devs, I would like to start a discussion on FLIP-382: Unify the Provision of Diverse Metadata for Context-like APIs [1].
In the Flink project, the context-like APIs are interfaces annotated by @Public and supply runtime metadata and functionalities to its modules and components. RuntimeContext is such an interface with 27 methods for accessing metadata and framework functionalities. Currently, any addition of metadata requires updating the RuntimeContext interface and all 12 of its implementation classes, leading to high code maintenance costs. To improve this, we propose to a categorize all metadata into some metadata classes and provide it through dedicated methods in context-like APIs. The newly provided metadata in context-like API will only require to update the metadata classes, not context-like API itself or it's implementations. Looking forward to your feedback. [1] https://cwiki.apache.org/confluence/display/FLINK/FLIP-382%3A+Unify+the+Provision+of+Diverse+Metadata+for+Context-like+APIs Best regards, Wencong Liu
