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https://issues.apache.org/jira/browse/ARROW-6836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-6836:
----------------------------------
    Labels: pull-request-available  (was: )

> [Format] add a custom_metadata:[KeyValue] field to the Footer table in 
> File.fbs
> -------------------------------------------------------------------------------
>
>                 Key: ARROW-6836
>                 URL: https://issues.apache.org/jira/browse/ARROW-6836
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Format
>            Reporter: John Muehlhausen
>            Priority: Minor
>              Labels: pull-request-available
>
> add a custom_metadata:[KeyValue] field to the Footer table in File.fbs
> Use case:
> If a file is expanded with additional recordbatches and the custom_metadata 
> changes, Schema is no longer an appropriate place to make this change since 
> the two copies of Schema (at the beginning and end of the file) would then be 
> ambiguous
> cf 
> https://lists.apache.org/thread.html/c3b3d1456b7062a435f6795c0308ccb7c8fe55c818cfed2cf55f76c5@%3Cdev.arrow.apache.org%3E



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