TsReaper opened a new pull request #12272: URL: https://github.com/apache/flink/pull/12272
## What is the purpose of the change This is a hot fix for `CollectSinkFunction`. `TypeSerializer`s are not thread safe but currently `CollectSinkFunction` reuses them among two threads. This PR fixes this problem. Actually FLINK-17774 also solves this problem, but we should add a quick fix now to not shade other failures in tests. ## Brief change log - Fix serializer thread safe problem in CollectSinkFunction ## 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)`: 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/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 ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org