GitHub user zhijiangW opened a pull request:
https://github.com/apache/flink/pull/5317
[FLINK-8458] Add the switch for keeping both the old mode and the new
credit-based mode
## What is the purpose of the change
*After the whole feature of credit-based flow control is done, we should
add a config parameter to switch on/off the new credit-based mode. To do so, we
can roll back to the old network mode for any expected risks.*
*The parameter is defined as
taskmanager.network.credit-based-flow-control.enabled and the default value is
true. This switch may be removed after next release.*
*This PR is based on #4552 whose commit is also included for passing
travis.*
## Brief change log
- *Abstract the `NetworkClientHandler` interface for different
implementations in two modes*
- *Abstract the `NetworkSequenceViewReader` interface for different
implementations in two modes*
- *Define the `taskmanager.network.credit-based-flow-control.enabled` in
`TaskManagerOptions`*
## Verifying this change
This change is already covered by existing tests*.
## 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)
- The S3 file system connector: (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-8458
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5317.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 #5317
----
commit a3b41f51173adaa382b42877142664d2b09101f7
Author: Zhijiang <wangzhijiang999@...>
Date: 2017-09-30T06:36:19Z
[FLINK-7456][network] Implement Netty sender incoming pipeline for
credit-based
commit a8154989f9c93e71e3051d7184c0f02316f1a3c7
Author: Zhijiang <wangzhijiang999@...>
Date: 2018-01-17T06:15:04Z
[FLINK-8458] Add the switch for keeping both the old mode and the new
credit-based mode
----
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