tzulitai opened a new pull request #7504: [FLINK-10778] [tests] Extend TypeSerializerSnapshotMigrationTestBase to test migrating from multiple versions URL: https://github.com/apache/flink/pull/7504 ## What is the purpose of the change Prior to this PR, the `TypeSerializerSnapshotMigrationTestBase` was hardcoded to only test restoring from serializer snapshots generated in Flink 1.6.x. The main goal of this PR is to: - Make the test base version-aware so that multiple serializer snapshots can be tested - Extend all existing subclasses to test migrating from a 1.7.x snapshot (test snapshots are generated and added to this PR) - There are some other minor changes to the test base, to better match the actual usage / API contracts of the `TypeSerializerSnapshot` abstraction. ## Brief change log - 8303eec: Move `MigrationVersion` class to flink-core, since it'll be used by `TypeSerializerSnapshotMigrationTestBase`. - f5b587a: Makes `TypeSerializerSnapshotMigrationTestBase` version-aware. Test specifications can now define the version that the target test snapshot was taken in. - a13ae99 to 2196635: Some minor changes to the test base to better match usage & API contracts of the `TypeSerializerSnapshot` abstraction. - 3ba6a5e: Adds a utility `TestSpecifications` class that would help with de-duplicating code when specifying test specifications for multiple versions. - c5d20b7 to 200edc7: Adding `MigrationVersion.1.7` to the parameters of all existing `TypeSerializerSnapshotMigrationTestBase` subclasses, as well as generating the required test snapshot / data files for them. ## Verifying this change This is a refactoring of tests. All subclasses of `TypeSerializerSnapshotMigrationTestBase` should be passing still. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - If yes, how is the feature documented? not applicable
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