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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2018/01/04 14:43:00 UTC

[jira] [Commented] (ARROW-1964) Python: Expose Builder classes

    [ https://issues.apache.org/jira/browse/ARROW-1964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16311415#comment-16311415 ] 

Wes McKinney commented on ARROW-1964:
-------------------------------------

+1, particularly vector appends (NumPy, pandas, or other Arrow arrays)

> Python: Expose Builder classes
> ------------------------------
>
>                 Key: ARROW-1964
>                 URL: https://issues.apache.org/jira/browse/ARROW-1964
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Python
>            Reporter: Uwe L. Korn
>             Fix For: 1.0.0
>
>
> Having the builder classes available from Python would be very helpful. Currently a construction of an Arrow array always need to have a Python list or numpy array as intermediate. As  the builder in combination with jemalloc are very efficient in building up non-chunked memory, it would be nice to directly use them in certain cases.



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