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From "Jacques Nadeau (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-2940) Large allocations are not released until GC kicks in
Date Sat, 02 May 2015 17:25:06 GMT

     [ https://issues.apache.org/jira/browse/DRILL-2940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jacques Nadeau updated DRILL-2940:
----------------------------------
    Assignee: Steven Phillips  (was: Jacques Nadeau)

> 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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