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Posted to issues@drill.apache.org by "Jacques Nadeau (JIRA)" <ji...@apache.org> on 2015/05/02 19:26:05 UTC

[jira] [Comment Edited] (DRILL-2940) Large allocations are not released until GC kicks in

    [ https://issues.apache.org/jira/browse/DRILL-2940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14525372#comment-14525372 ] 

Jacques Nadeau edited comment on DRILL-2940 at 5/2/15 5:25 PM:
---------------------------------------------------------------

Correction, having trouble posting since depends on 2826.  Please review locally until I resolve


was (Author: jnadeau):
Reviewboard here: https://reviews.apache.org/r/33782/

> Large allocations are not released until GC kicks in
> ----------------------------------------------------
>
>                 Key: DRILL-2940
>                 URL: https://issues.apache.org/jira/browse/DRILL-2940
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Flow
>            Reporter: Jacques Nadeau
>            Assignee: Steven Phillips
>             Fix For: 1.0.0
>
>         Attachments: DRILL-2940.patch
>
>
> If you allocate over the chunk size (16mb), we are currently relying on GC to release those buffers. This is problematic since direct memory pressure doesn't cause gc.  In some situations with fast memory turnover, this means we run out of memory incorrectly.



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