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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2018/01/21 21:05:00 UTC

[jira] [Updated] (ARROW-41) C++: Convert RecordBatch to StructArray, and back

     [ https://issues.apache.org/jira/browse/ARROW-41?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney updated ARROW-41:
------------------------------
    Summary: C++: Convert RecordBatch to StructArray, and back  (was: C++: Convert table to std::vector of Struct arrays)

> C++: Convert RecordBatch to StructArray, and back
> -------------------------------------------------
>
>                 Key: ARROW-41
>                 URL: https://issues.apache.org/jira/browse/ARROW-41
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Wes McKinney
>            Priority: Major
>             Fix For: 0.9.0
>
>
> This may require memory allocation depending on the chunking of the table columns. 
> While tables and struct type columns are semantically equivalent (and tables can be embedded in other tables using struct types), the memory layout of a table may not be strictly contiguous. For the purposes of putting data on the wire / in shared memory, it may be useful to offer a conversion function to "structify" an in-memory logical Arrow table. See ARROW-24



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