azagrebin opened a new pull request #7320: [FLINK-11171] Avoid concurrent usage of StateSnapshotTransformer URL: https://github.com/apache/flink/pull/7320 ## What is the purpose of the change StateSnapshotTransformer objects are now created when state is initialised. Afterwards, they are called in asynchronous part of checkpoint. However, they can be non-thread safe if accessed from multiple checkpoint operations. This PR changes backends to keep transformer factory after state init and create transformer right before iterating the state entries in the same thread. ## Brief change log Change backends to keep transformer factory and create thread-confined transformer. ## Verifying this change Unit 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)`: (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: (yes) - 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)
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
