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Posted to issues@drill.apache.org by "Suresh Ollala (JIRA)" <ji...@apache.org> on 2016/05/06 18:22:12 UTC

[jira] [Updated] (DRILL-4121) External Sort may not spill if above a receiver

     [ https://issues.apache.org/jira/browse/DRILL-4121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Suresh Ollala updated DRILL-4121:
---------------------------------
    Reviewer: Kunal Khatua  (was: Victoria Markman)

> External Sort may not spill if above a receiver
> -----------------------------------------------
>
>                 Key: DRILL-4121
>                 URL: https://issues.apache.org/jira/browse/DRILL-4121
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Deneche A. Hakim
>            Assignee: Deneche A. Hakim
>             Fix For: 1.5.0
>
>
> If external sort is above a receiver, all received batches will contain non root buffers. Sort operator doesn't account for non root buffers when estimating how much memory and if it needs to spill to disk. This may delay the spill and cause the corresponding Drillbit to use large amounts of memory



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