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From paul-rogers <...@git.apache.org>
Subject [GitHub] drill pull request #754: DRILL-5275: Sort spill is slow due to repeated allo...
Date Mon, 20 Feb 2017 01:58:22 GMT
GitHub user paul-rogers opened a pull request:

    https://github.com/apache/drill/pull/754

    DRILL-5275: Sort spill is slow due to repeated allocations

    DRILL-5275 -  Sort spill serialization is slow due to repeated buffer
    allocations
    
    Rather than create a heap buffer per vector when writing and reading,
    the revised code creates a single, shared buffer used for all I/O
    within a particular container. This improves performance by reducing GC
    and CPU costs during I/Os.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/paul-rogers/drill DRILL-5275

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/drill/pull/754.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #754
    
----
commit 60b95f777eefe343fd49e380d03128090fd96a7a
Author: Paul Rogers <progers@maprtech.com>
Date:   2017-02-20T01:53:31Z

    DRILL-5275 Sort spill is slow due to repeated allocations
    
    DRILL-5275 -  Sort spill serialization is slow due to repeated buffer
    allocations
    
    Rather than create a heap buffer per vector when writing and reading,
    the revised code creates a single, shared buffer used for all I/O
    within a particular container. This improves performance by reducing GC
    and CPU costs during I/Os.

----


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