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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-44324] Template SortExecutor to be able to sort either WorkingSetMember or Document, improving agg sort perf</title>
                <link>https://jira.mongodb.org/browse/SERVER-44324</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Performance tests show that it is faster to sort &lt;tt&gt;Document&lt;/tt&gt; than to sort &lt;tt&gt;WorkingSetMember&lt;/tt&gt;. The system is currently always sorting &lt;tt&gt;WorkingSetMember&lt;/tt&gt; objects, even in the context of &lt;tt&gt;DocumentSource&lt;/tt&gt; execution, where a &lt;tt&gt;WorkingSetMember&lt;/tt&gt; must be created to contain the &lt;tt&gt;Document&lt;/tt&gt;. We can optimize sorts that take place in the &lt;tt&gt;DocumentSource&lt;/tt&gt; layer by sorting the &lt;tt&gt;Document&lt;/tt&gt; objects directly.&lt;/p&gt;

&lt;p&gt;In the future, we could also use the templated &lt;tt&gt;SortExecutor&lt;/tt&gt; in order to optimize the &lt;tt&gt;SortStage&lt;/tt&gt; itself: for fetched data, it&apos;s likely faster to sort &lt;tt&gt;Document&lt;/tt&gt; or even &lt;tt&gt;BSONObj&lt;/tt&gt; in the &lt;tt&gt;PlanStage&lt;/tt&gt; layer.&lt;/p&gt;</description>
                <environment></environment>
        <key id="984563">SERVER-44324</key>
            <summary>Template SortExecutor to be able to sort either WorkingSetMember or Document, improving agg sort perf</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="david.storch@mongodb.com">David Storch</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Wed, 30 Oct 2019 22:23:52 +0000</created>
                <updated>Sun, 29 Oct 2023 22:15:33 +0000</updated>
                            <resolved>Mon, 4 Nov 2019 19:16:05 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="2516529" author="xgen-internal-githook" created="Mon, 4 Nov 2019 17:53:51 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;dstorch&apos;, &apos;email&apos;: &apos;david.storch@mongodb.com&apos;, &apos;name&apos;: &apos;David Storch&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44324&quot; title=&quot;Template SortExecutor to be able to sort either WorkingSetMember or Document, improving agg sort perf&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44324&quot;&gt;&lt;del&gt;SERVER-44324&lt;/del&gt;&lt;/a&gt; Template the SortExecutor.&lt;/p&gt;

&lt;p&gt;This improves the performance of blocking sort operations&lt;br/&gt;
executed in the agg layer of the execution tree.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b1ecef421c634b17d88eedc68864cdc886507dbe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b1ecef421c634b17d88eedc68864cdc886507dbe&lt;/a&gt;&lt;/p&gt;</comment>
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