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Posted to issues@arrow.apache.org by "Ji Liu (Jira)" <ji...@apache.org> on 2019/08/21 07:34:00 UTC

[jira] [Assigned] (ARROW-6296) [Java] Cleanup JDBC interfaces and eliminate one memcopy for binary/varchar fields

     [ https://issues.apache.org/jira/browse/ARROW-6296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ji Liu reassigned ARROW-6296:
-----------------------------

    Assignee: Ji Liu

> [Java] Cleanup JDBC interfaces and eliminate one memcopy for binary/varchar fields
> ----------------------------------------------------------------------------------
>
>                 Key: ARROW-6296
>                 URL: https://issues.apache.org/jira/browse/ARROW-6296
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Java
>            Reporter: Micah Kornfield
>            Assignee: Ji Liu
>            Priority: Major
>
> * If we use direct setting of fields, we can avoid the extra temporary buffer and memcpy by setting bytes directly.
>  * We should overwrite existing vectors in consumers before returning results, to avoid the possibility of closing vectors in use (or alternatively make sure we retain the underlying buffers).
>  * Try to eliminate some of the state in load() by moving initialization to the constructor.



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