GitHub user zhijiangW opened a pull request: https://github.com/apache/flink/pull/4735
[FLINK-7699][core] Define the BufferListener interface to replace EventlListener in BufferProvider ## What is the purpose of the change *Currently the EventListener is used in BufferProvider to be notified of buffer available or destroyed pool.* *To be semantic clearly, we define a new BufferListener interface which can opt for a one-time only notification or to be notified repeatedly. And we can also notify the pool destroyed via explicitly method notifyBufferDestroyed.* This RP is based on #4499 whose commit is also included for passing travis. Review the third commit for this PR change. ## Brief change log - *The `RemoteInputChannel` will implement the `BufferListener` to wait for floating buffers from `BufferProvider`.* ## Verifying this change This change is already covered by existing tests, such as *LocalBufferPoolTest*. ## 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, Yarn/Mesos, ZooKeeper: (no) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (not applicable) You can merge this pull request into a Git repository by running: $ git pull https://github.com/zhijiangW/flink FLINK-7699 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/4735.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #4735 ---- ---- ---