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Posted to issues@drill.apache.org by "Paul Rogers (JIRA)" <ji...@apache.org> on 2017/06/23 04:00:00 UTC

[jira] [Updated] (DRILL-5601) Rollup of External Sort memory management fixes

     [ https://issues.apache.org/jira/browse/DRILL-5601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Rogers updated DRILL-5601:
-------------------------------
    Reviewer: Boaz Ben-Zvi

[~ben-zvi], can you review this one?

> Rollup of External Sort memory management fixes
> -----------------------------------------------
>
>                 Key: DRILL-5601
>                 URL: https://issues.apache.org/jira/browse/DRILL-5601
>             Project: Apache Drill
>          Issue Type: Task
>    Affects Versions: 1.11.0
>            Reporter: Paul Rogers
>            Assignee: Paul Rogers
>             Fix For: 1.11.0
>
>
> Rollup of a set of specific JIRA entries that all relate to the very difficult problem of managing memory within Drill in order for the external sort to stay within a memory budget. In general, the fixes relate to better estimating memory used by the three ways that Drill allocates vector memory (see DRILL-5522) and to predicting the size of vectors that the sort will create, to avoid repeated realloc-copy cycles (see DRILL-5594).



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