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https://issues.apache.org/jira/browse/ARROW-1727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16219039#comment-16219039
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Brian Hulette commented on ARROW-1727:
--------------------------------------

Is the scope of this ticket just making the appropriate documentation and/or 
flatbuffer spec changes in 
[/format|https://github.com/apache/arrow/tree/master/format]?

I like the idea idea of including a {{NEW/DELTA}} flag in the dictionary batch. 
Is there a way the flag could be optional and default to {{NEW}} for backwards 
compatibility? or is that not worth the trouble?

> [Format] Expand Arrow streaming format to permit new dictionaries and deltas 
> / additions to existing dictionaries
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-1727
>                 URL: https://issues.apache.org/jira/browse/ARROW-1727
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Format
>            Reporter: Wes McKinney
>




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