Myasuka opened a new pull request #10610: [FLINK-13910] Add missing serialVersionUID for serializable classes URL: https://github.com/apache/flink/pull/10610 ## What is the purpose of the change Add `serialVersionUID` for all production serializable classes. ## Brief change log All `serialVersionUID` of classes in this PR is auto generated by my customized intellij-IDEA (please refer to my [repo](https://github.com/Myasuka/intellij-community/tree/add-SerialVersionUID)). Generally, we could use [serialver](https://docs.oracle.com/javase/8/docs/technotes/tools/unix/serialver.html) to get the `serialVersionUID`, however, how to insert them into the classes become a bit complex, that's why I want to leverage intellj-IDEA's feature of [auto generating serialVersionUID](https://stackoverflow.com/questions/24573643/how-to-generate-serial-version-uid-in-intellij). However, both intellij and eclipse use different rules to generate `serialVersionUID` compared with JVM or serialver. To ensure these newly added `serialVersionUID`s are compatible with old ones, I have to use code class path to get SerialVersionUID from `ObjectStreamClass`. Eventually, I chose to modify and rebuild a customized IDE. 1. build Flink from source: ~~~ shell mvn clean package -DskipTests -Dfast -Pskip-webui-build -T 1C ~~~ 2. Build and run my customized intellij IDEA, you could refer to the [README](https://github.com/Myasuka/intellij-community/tree/add-SerialVersionUID) 3. Run `Analyze` -> `Run inspection by name` -> select `serializable class without serialVersionUID` -> choose `Project Production Files` and click to `Ignore anonymous inner classes`. 4. Then you will get the results for all production classes without `serialVersionUID` in the bottom window and click `Add 'serialVersionUID' field` on the right side. Wait for a while to get the final result. ## Verifying this change This change is already covered by existing tests. ## 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)`: **yes**, add `serialVersionUID` - 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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