dawidwys opened a new pull request #7566: [FLINK-11328][core] Migrate NFAStateSerializer to new TypeSerializer interface URL: https://github.com/apache/flink/pull/7566 ## What is the purpose of the change This PR adds `NFAStateSerializerSnapshot` corresponding to `NFAStateSerializer`. ## Brief change log - fa99e09 - this is a small fix that closes nfa in `CepOperator` only if it was not null, this can happen only in a case of failure, this effectively improves error message, which is not overwritten by NPE - a3c6b6f - no functional changes. Just splits methods in `NFAStateSerializer` into smaller ones - ae1f04b - introduces `NFAStateSerializerSnapshot` ## Verifying this change - test in `CepMigrationTest` should still pass - added test specification in `org.apache.flink.cep.NFASerializerSnapshotsMigrationTest` ## 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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