sjwiesman opened a new pull request #8618: [FLINK-12732][state-processor-api] Add savepoint reader for consuming partitioned operator state URL: https://github.com/apache/flink/pull/8618 ## What is the purpose of the change This is the second PR for FLIP-43 adding the functionality to read partitioned operator state from a state snapshot. It is based on #8615 and only the final 4 commits should be reviewed. ## Brief change log 62dd050 - Some basic refactoring, this pulls the `NeverCompleteFuture` into a reusable utility 38eaa66 - Implements a shim `Environment` on-top of the available user `RuntimeContext` 9689001 - Adds the new functionality to read keyed state out of a snapshot be0552c - Adds new documentation ## Verifying this change *(Please pick either of the following options)* This change added tests and can be verified as follows: UT and IT tests ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / no / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (**yes** / no) - If yes, how is the feature documented? (not applicable / **docs** / JavaDocs / not documented)
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