JingGe opened a new pull request #19145: URL: https://github.com/apache/flink/pull/19145
## What is the purpose of the change Found a potential visibility issue and some typos while reading the mailbox code. The instance variable mainMailboxExecutor in StreamTask is package-private but only used in subclasses that are in the same package. The visibility should be protected. ## Brief change log - change the instance variable mainMailboxExecutor in StreamTask to be protected - fix the wrong local variable name in MailboxProcessor - fix some typos in java doc ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **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