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Posted to dev@flink.apache.org by "Timo Walther (Jira)" <ji...@apache.org> on 2026/09/18 12:57:00 UTC

[jira] [Created] (FLINK-40708) Support ValueView in PTFs

Timo Walther created FLINK-40708:
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             Summary: Support ValueView in PTFs
                 Key: FLINK-40708
                 URL: https://issues.apache.org/jira/browse/FLINK-40708
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / API, Table SQL / Planner, Table SQL / Runtime
            Reporter: Timo Walther
            Assignee: Timo Walther


The API proposed in FLIP-440 makes it very easy and intuitive for developers to declare and use value state, including defining a default initial value.

However, state access in PTF is more complex and not every state entry needs to be read and/or updated. For future optimizations such as lazy deserialization or avoiding no-op serialization, a “supplier-like“ pattern should be promoted for optimal performance.

This FLIP proposes the introduction of a ValueView that follows the design principles of MapView and ListView and adopts ValueState interfaces from DataStream API.



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