How to access the flink state of stateful UDF in Pipeline Builder stream mode?

VincentF
Thu, 02 Apr 2026 08:47:27 +0000
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Is it somehow possible to access the state in the flink checkpoint of a streaming pipeline, of a stateful Java UDF executed in a Pipeline Builder in streaming mode ?

Usecase: Whenever there is a schema change, or something that requires to “migrate the state” of long running window/stateful UDF, it might require a replay, and so will require to “recover the current state” to “inject it in the next replay”.

What are the solutions to migrate the old state into the new state or at least to access the state (e.g. to be able to dump the state in a dataset, move upstream, union/join and seed the new stateful UDF state with it)

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