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
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