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https://issues.apache.org/jira/browse/FLINK-14790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-14790:
-----------------------------------
    Labels: auto-deprioritized-major stale-minor  (was: 
auto-deprioritized-major)

I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help 
the community manage its development. I see this issues has been marked as 
Minor but is unassigned and neither itself nor its Sub-Tasks have been updated 
for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is 
still Minor, please either assign yourself or give an update. Afterwards, 
please remove the label or in 7 days the issue will be deprioritized.


> Custom state backend in job graph composition without depending on concrete 
> state backend implementation
> --------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-14790
>                 URL: https://issues.apache.org/jira/browse/FLINK-14790
>             Project: Flink
>          Issue Type: New Feature
>          Components: API / DataStream
>            Reporter: Kezhu Wang
>            Priority: Minor
>              Labels: auto-deprioritized-major, stale-minor
>
> In Flink 1.9 and before, if we want to custom state backend, we have to 
> supply concrete state backend implementation in 
> {{StreamExecutionEnvironment.setStateBackend}}. This implies that we have to 
> depend on that concrete state backend implementation in job graph composition 
> phase since we have to construct this concrete state backend. This may not be 
> appropriate if we separate job graph composition and execution strictly, as 
> job graph composition requires no state backend functions besides 
> customization.
> Suppose that we are going to build a declarative streaming platform that 
> building plain json/yaml like textual object, which may contain custom state 
> backend configuration, with attached dependent jars to job graph and 
> submitting generated job graph to Flink, we apparently should avoid ad-hoc 
> state backend construction due to code reusability and indeterministic state 
> backends configured.
> So I propose to support state backend customization in job graph composition 
> phase to not depend on concrete state backend implementation.
> To achieve this goal, a  {{Configuration}} field, say 
> {{StreamExecutionEnvironment.stateBackendConfiguration}}, should be 
> sufficient.



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