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https://issues.apache.org/jira/browse/FLINK-31873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weijie Guo closed FLINK-31873.
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Fix Version/s: 1.18.0
Resolution: Fixed
master(1.18) via 7a1c2b5750d9576f09023cf2810ed965072b699e.
> Add setMaxParallelism to the DataStreamSink Class
> -------------------------------------------------
>
> Key: FLINK-31873
> URL: https://issues.apache.org/jira/browse/FLINK-31873
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.18.0
> Reporter: Eric Xiao
> Assignee: Eric Xiao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.18.0
>
> Attachments: Screenshot 2023-04-20 at 4.33.14 PM.png
>
>
> When turning on Flink reactive mode, it is suggested to convert all
> {{setParallelism}} calls to {{setMaxParallelism}} from [elastic scaling
> docs|https://nightlies.apache.org/flink/flink-docs-release-1.17/docs/deployment/elastic_scaling/#configuration].
> With the current implementation of the {{DataStreamSink}} class, only the
> {{[setParallelism|https://github.com/apache/flink/blob/master/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/DataStreamSink.java#L172-L181]}}
> function of the
> {{[Transformation|https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/api/dag/Transformation.java#L248-L285]}}
> class is exposed - {{Transformation}} also has the
> {{[setMaxParallelism|https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/api/dag/Transformation.java#L277-L285]}}
> function which is not exposed.
>
> This means for any sink in the Flink pipeline, we cannot set a max
> parallelism.
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