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Posted to issues@drill.apache.org by "Paul Rogers (JIRA)" <ji...@apache.org> on 2017/06/21 18:40:00 UTC

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

Paul Rogers created DRILL-5601:
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             Summary: 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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