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https://issues.apache.org/jira/browse/FLINK-21916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17306696#comment-17306696
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Xintong Song commented on FLINK-21916:
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{{ManagedMemoryUseCase}} are not intended to be exclusive for operators. Unless
there's other concerns from [~kkl0u], +1 from my side.
I think we should merge the two sets of use cases from the translated
{{StreamNode}} and from the original {{Transformation}}, and explicitly fail on
conflicts (different weights setting to the same use case).
> Allow OPERATOR and PYTHON ManagedMemoryUseCase to be used in the same operator
> ------------------------------------------------------------------------------
>
> Key: FLINK-21916
> URL: https://issues.apache.org/jira/browse/FLINK-21916
> Project: Flink
> Issue Type: Sub-task
> Components: API / DataStream, API / Python
> Reporter: Dian Fu
> Assignee: Dian Fu
> Priority: Major
> Fix For: 1.13.0
>
>
> Currently, the implementation of
> [SimpleTransformationTranslator|https://github.com/apache/flink/blob/97bfd049951f8d52a2e0aed14265074c4255ead0/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/graph/SimpleTransformationTranslator.java#L119]
> restricts that OPERATOR and PYTHON use case could not be used in the same
> operator. For batch mode of Python DataStream API:
> - OPERATOR use case will be added firstly in
> BatchExecutionUtils.applyBatchExecutionSettings for a keyed operator during
> translation
> - Then the PYTHON use case which is set in the transformation could not be
> added in
> [SimpleTransformationTranslator|https://github.com/apache/flink/blob/97bfd049951f8d52a2e0aed14265074c4255ead0/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/graph/SimpleTransformationTranslator.java#L119]
> as the streamNode.getManagedMemoryOperatorScopeUseCaseWeights() is not empty.
> We need to remove the restriction in
> [SimpleTransformationTranslator|https://github.com/apache/flink/blob/97bfd049951f8d52a2e0aed14265074c4255ead0/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/graph/SimpleTransformationTranslator.java#L119]
> if there are no special reasons.
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