t-eimizu opened a new pull request, #19971: URL: https://github.com/apache/flink/pull/19971
## What is the purpose of the change To avoid ClassCastException in creating a checkpoint with merge windows. Please see the description in [FLINK-28034](https://issues.apache.org/jira/browse/FLINK-28034). ## Brief change log - *VoidNamespace is assigned to currentNamespace only when namespaceSerializer is VoidNamespaceSerializer.* ## Verifying this change This change added tests and can be verified as follows: - *Clone this repository `https://github.com/t-eimizu/flink-checkpoint-with-merging-window` and run the job.* - please change `KAFKA_BOOTSTRAP_SERVER` to your environment. - *Added test that validates the same descriptor can be used in different contexts to refer to the same state and successfully create a snapshot.* ## 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, Kubernetes/Yarn, ZooKeeper: yes (StateBackends and Checkpointing) - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
