arrow-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Julien Le Dem (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (ARROW-257) Add a typeids Vector to Union type
Date Wed, 21 Sep 2016 23:10:20 GMT

     [ https://issues.apache.org/jira/browse/ARROW-257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Julien Le Dem reassigned ARROW-257:
-----------------------------------

    Assignee: Julien Le Dem

> Add a typeids Vector to Union type
> ----------------------------------
>
>                 Key: ARROW-257
>                 URL: https://issues.apache.org/jira/browse/ARROW-257
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Format
>            Reporter: Julien Le Dem
>            Assignee: Julien Le Dem
>
> {noformat}
> enum UnionMode:int { Sparse, Dense }
> table Union {
>   mode: UnionMode;
>   typeIds: [Int32]; // optional, describes typeid of each child.
> }
> {noformat}
> The idea is to enable providing an id different from the child offset (the default)
> This enables an optimization where we use predefined ids when constructing the type vector
of the union but want the children to be only the actually used types.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message