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https://issues.apache.org/jira/browse/SPARK-46265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Herman van Hövell resolved SPARK-46265.
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    Fix Version/s: 4.0.0
         Assignee: Niranjan Jayakar
       Resolution: Fixed

> New assertions in AddArtifact RPC make the connect client incompatible with 
> older clusters
> ------------------------------------------------------------------------------------------
>
>                 Key: SPARK-46265
>                 URL: https://issues.apache.org/jira/browse/SPARK-46265
>             Project: Spark
>          Issue Type: Bug
>          Components: Connect
>    Affects Versions: 4.0.0
>            Reporter: Niranjan Jayakar
>            Assignee: Niranjan Jayakar
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>
> We added new assertions to the AddArtifact RPC - 
> [https://github.com/apache/spark/commit/d9c5f9d6#diff-d4744c7abd099c57d04746140aba3c20b93f1ac011f5915f963e0a3e0758690e]
> As part of this change, we have also updated the RPC implementation to return 
> session id as part of its response.
>  
> Since the assertion depends on the session id to be present, it makes the 
> protocol incompatible such that newer Connect clients that apply this 
> assertion are incompatible with older clusters that don't have the 
> corresponding service side changes.
>  



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