zhijiangW opened a new pull request #8646: [FLINK-12735][network] Make shuffle environment implementation independent with IOManager URL: https://github.com/apache/flink/pull/8646 ## What is the purpose of the change *The current creation of `NetworkEnvironment` relies on `IOManager` from `TaskManagerServices`. It is better not to rely on external components for constructing specific shuffle environment, so the `NetworkEnvironment` could create internal `FileChannelManager` which is already extracted from `IOManager`.* ## Brief change log - *Extract file channel related functions in `IOManager` to define internal `FileChannelManager` class* - *Make `NetworkEnvironment` creates internal `FileChannelManager` to be used for `ResultPartition`* ## Verifying this change *covered by existing tests* ## 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, Yarn/Mesos, 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**) - If yes, how is the feature documented? (**not applicable** / docs / JavaDocs / not documented)
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