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Posted to issues@orc.apache.org by "Panagiotis Garefalakis (Jira)" <ji...@apache.org> on 2020/04/15 11:52:00 UTC

[jira] [Assigned] (ORC-619) Row-level filtering support for nested types

     [ https://issues.apache.org/jira/browse/ORC-619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Panagiotis Garefalakis reassigned ORC-619:
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> Row-level filtering support for nested types
> --------------------------------------------
>
>                 Key: ORC-619
>                 URL: https://issues.apache.org/jira/browse/ORC-619
>             Project: ORC
>          Issue Type: Sub-task
>            Reporter: Panagiotis Garefalakis
>            Assignee: Panagiotis Garefalakis
>            Priority: Major
>
> In the current implementation we are propagating the selected array (using filterContext) to the appropriate subtypes to allow row-level skipping.
> This works for basic types such as Decimals and complex ones like inner structs there is 1-1 mapping in the rows, however it more complex for nested types such as Lists or Maps where the number of inner rows is different and thus needs special handling.



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