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From "Denis Magda (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-3870) Keeping SQL query result set in off heap tire
Date Thu, 08 Sep 2016 17:37:20 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-3870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15474513#comment-15474513
] 

Denis Magda commented on IGNITE-3870:
-------------------------------------

[~sergi.vladykin], please provide your thoughts and expand/modify the description if needed.

> Keeping SQL query result set in off heap tire
> ---------------------------------------------
>
>                 Key: IGNITE-3870
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3870
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Denis Magda
>            Assignee: Sergi Vladykin
>
> With the new off heap storage architectures (IGNITE-3477) it makes sense to improve a
part of the system that prepares an SQL query result set in a such a way:
> - result set should consist of wrappers objects that incorporate off heap pointers to
fields and values stored off heap;
> - during the time the result set is being sent over the wire we shouldn't move fields
and values from off heap to Java heap but rather implement a solution that will allow us to
pass an off heap pointer to a sockets output stream. Probably this can be done by leveraging
Java's DirectBuffers.



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