[jira] [Updated] (ARROW-11838) [C++] Support reading IPC data with shared dictionaries

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-11838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-11838:
-----------------------------------
    Labels: pull-request-available  (was: )

> [C++] Support reading IPC data with shared dictionaries
> -------------------------------------------------------
>
>                 Key: ARROW-11838
>                 URL: https://issues.apache.org/jira/browse/ARROW-11838
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Joris Peeters
>            Assignee: Joris Peeters
>            Priority: Minor
>              Labels: pull-request-available
>
> The Arrow format supports dictionaries being re-used across multiple columns. At present, neither reading nor writing these is supported from C++ (and thus Python). 
> Support for writing these would require extending the interfaces, but reading might be a relatively quick win - and this issue is concerned with the latter only.
> The Java implementation supports writing, so can be used to generate test data. 
> Once the C++ side is handled, pyarrow should automatically be able to convert such tables to pandas, with appropriate use of categoricals. This should also be verified, and otherwise addressed.
>  
>  
>  



--
This message was sent by Atlassian Jira
(v8.3.4#803005)