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https://issues.apache.org/jira/browse/FLINK-8718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16371477#comment-16371477
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ASF GitHub Bot commented on FLINK-8718:
---------------------------------------
GitHub user GJL opened a pull request:
https://github.com/apache/flink/pull/5545
[FLINK-8718][DataStream] Set maxParallelism on non-parallel DataStreamSource
## What is the purpose of the change
*Set maxParallelism to 1 on
`org.apache.flink.streaming.api.datastream.DataStreamSource` if the operator is
non-parallel.*
cc: @tillrohrmann @bowenli86 @aljoscha
## Brief change log
- *Call `forceNonParallel()` if source operator is non-parallel.*
- *Unit test `DataStreamSource`.*
## Verifying this change
This change added tests and can be verified as follows:
- *Added unit tests for `DataStreamSource`*
## 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/GJL/flink FLINK-8718
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5545.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 #5545
----
commit 3450c455e8e28bc83858f1c611fe8a648cc8cd97
Author: gyao <gary@...>
Date: 2018-02-21T14:26:49Z
[FLINK-8718][DataStream] Set maxParallelism to 1 on non-parallel
DataStreamSource
----
> Non-parallel DataStreamSource does not set max parallelism
> ----------------------------------------------------------
>
> Key: FLINK-8718
> URL: https://issues.apache.org/jira/browse/FLINK-8718
> Project: Flink
> Issue Type: Bug
> Components: DataStream API, Streaming
> Affects Versions: 1.5.0
> Reporter: Gary Yao
> Assignee: Gary Yao
> Priority: Major
> Fix For: 1.5.0
>
>
> {{org.apache.flink.streaming.api.datastream.DataStreamSource}} does not set
> {{maxParallelism}} to 1 if it is non-parallel.
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