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Posted to issues@flink.apache.org by "Chen Zhang (Jira)" <ji...@apache.org> on 2026/06/25 03:22:00 UTC

[jira] [Commented] (FLINK-34406) Expose RuntimeContext in FunctionContext

    [ https://issues.apache.org/jira/browse/FLINK-34406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18091377#comment-18091377 ] 

Chen Zhang commented on FLINK-34406:
------------------------------------

Any updates for this ticket, I have similar demand for getting num of parallel subtasks from runtime context.

> Expose RuntimeContext in FunctionContext
> ----------------------------------------
>
>                 Key: FLINK-34406
>                 URL: https://issues.apache.org/jira/browse/FLINK-34406
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / API
>    Affects Versions: 1.19.0
>            Reporter: yisha zhou
>            Priority: Major
>
> When I implement a LookupFunction and utilize a RateLimiter in it, I need to open the RateLimiter in the open function. And I can only get a FunctionContext in the function. 
> However the RateLimiter needs to call getNumberOfParallelSubtasks of RuntimeContext to get the parallelism of the job, so that it can calculate the flow limitation for each subtask.
> Actually, getMetricGroup, getUserCodeClassLoader and so many FunctionContext functionalities all come from RuntimeContext. Why not just expose the RuntimeContext here?



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