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Posted to issues@arrow.apache.org by "Uwe L. Korn (JIRA)" <ji...@apache.org> on 2017/03/24 14:24:41 UTC

[jira] [Commented] (ARROW-707) Python: All none-Pandas column should be converted to NullArray

    [ https://issues.apache.org/jira/browse/ARROW-707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15940438#comment-15940438 ] 

Uwe L. Korn commented on ARROW-707:
-----------------------------------

[~wesmckinn] is that ok with you? I think the other way round could be a bit more complicated as we could either convert to a float-array of NaNs or an object array full of None.

> Python: All none-Pandas column should be converted to NullArray
> ---------------------------------------------------------------
>
>                 Key: ARROW-707
>                 URL: https://issues.apache.org/jira/browse/ARROW-707
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Uwe L. Korn
>            Assignee: Uwe L. Korn
>
> At the moment we throw {{ArrowException: Type error: Unable to infer type of object array, were all null}} but for this case we have {{NullArray}} inside of Arrow.



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