[FLINK-9529] Do not expose keyed operations on ProcessFunction.Context

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.5.0
• Fix Version/s: 3.0.0
• Component/s: API / DataStream
• Labels: auto-unassigned
• Assignee: Unassigned
• Reporter: Till Rohrmann
• Created: 05/Jun/18 11:54
• Updated: 03/Sep/24 07:25

Description

Currently, the ProcessFunction provides a Context object from which on can access the TimerService. The TimerService allows to register timers if one operates on a keyed stream. If it is not a keyed stream, then this operation fails. Recently, we added a KeyedProcessFunction which captures this semantic difference. I would propose to clean up the Context interface to give only access to supported operations when operating on a non-keyed and keyed state respectively.