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https://issues.apache.org/jira/browse/SPARK-10950?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-10950.
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    Resolution: Incomplete

> ApplicationHistoryInfo to include spark version; History Server to report 
> incompatibility with later versions
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-10950
>                 URL: https://issues.apache.org/jira/browse/SPARK-10950
>             Project: Spark
>          Issue Type: Improvement
>          Components: Web UI
>    Affects Versions: 1.5.1
>            Reporter: Steve Loughran
>            Priority: Minor
>              Labels: bulk-closed
>
> The history server cannot provide guarantees of forward compatibility -it's 
> unrealistic. What happens today is that the user gets to see a stack trace, 
> perhaps when attempting to unmarshall a JSON-formatted event which isn't 
> known about.
> If {{ApplicationHistoryInfo}} included a version field, and history providers 
> included and later retrieved version information in their histories, then the 
> UI could recognise incompatible histories and present them differently. In 
> the main UI, somehow indicating that they weren't readable; perhaps with the 
> URL being bonded to a page saying "incompatible version".



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