GitHub user pnowojski opened a pull request:
https://github.com/apache/flink/pull/5526
[FLINK-8674][runtime] Improve performance of flushAlways in
StreamRecordWriter
This PR reduces the number of data notifications in case of `flushAlways =
true`. Instead of notifying all of the channels/subpartitions, notify only the
one that has just been written to.
## 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): (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)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pnowojski/flink f8674
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5526.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 #5526
commit 56eb9aa6a3ee6167e4e0cf7d22cbf81ed2d11ccf
Author: Piotr Nowojski
Date: 2018-02-15T13:41:39Z
[FLINK-8674][runtime] Improve performance of flushAlways in
StreamRecordWriter
---
