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Subject [GitHub] [flink] zhijiangW opened a new pull request #8090: [FLINK-12067][network] Refactor the constructor of NetworkEnvironment
Date Mon, 01 Apr 2019 06:55:23 GMT
zhijiangW opened a new pull request #8090: [FLINK-12067][network] Refactor the constructor
of NetworkEnvironment
URL: https://github.com/apache/flink/pull/8090
   ## What is the purpose of the change
   *The constructor of `NetworkEnvironment` could be refactored to only contain `NetworkEnvironmentConfiguration`,
the other related components such as `TaskEventDispatcher`, `ResultPartitionManager`, `NetworkBufferPool`
could be created internally.*
   *We also refactor the process of generating `NetworkEnvironmentConfiguration` in `TaskManagerServiceConfiguration`
to add `numNetworkBuffers` instead of previous `networkBufFraction`, `networkBufMin`, `networkBufMax`.
This way seems more easy and direct to construct `NetworkBufferPool` later. `isCreditBased`
field is also maintained in this component for considering the setting usage in tests.*
   *Further we introduce the `NetworkEnvironmentConfigurationBuilder` for creating `NetworkEnvironmentConfiguration`
easily especially for tests.*
   ## Brief change log
     - *Refactor the constructor of `NetworkEnvironment` to container only `NetworkEnvironmentConfiguration*
     - *Refactor the constructor of `NetworkEnvironmentConfiguration`*
     - *Introduce the NetworkEnvironmentConfigurationBuilder` for tests*
   ## Verifying this change
   This change is already covered by existing tests, such as *NetworkEnvironmentTest* and
   ## 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

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