[ 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)