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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-3832] aggregation:  early $sort should be optimized to use an index if possible</title>
                <link>https://jira.mongodb.org/browse/SERVER-3832</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Similar to the optimization for an early $match, an early $sort should be able to use an index instead of sorting.&lt;/p&gt;</description>
                <environment></environment>
        <key id="22191">SERVER-3832</key>
            <summary>aggregation:  early $sort should be optimized to use an index if possible</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="9">Done</resolution>
                                        <assignee username="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="cwestin">Chris Westin</reporter>
                        <labels>
                    </labels>
                <created>Tue, 13 Sep 2011 16:19:24 +0000</created>
                <updated>Mon, 11 Jul 2016 18:34:42 +0000</updated>
                            <resolved>Fri, 6 Jan 2012 23:58:09 +0000</resolved>
                                                    <fixVersion>2.1.0</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="78293" author="auto" created="Fri, 6 Jan 2012 23:55:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;cwestin&apos;, u&apos;name&apos;: u&apos;U-tellus\\cwestin&apos;, u&apos;email&apos;: u&apos;cwestin@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3832&quot; title=&quot;aggregation:  early $sort should be optimized to use an index if possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3832&quot;&gt;&lt;del&gt;SERVER-3832&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/27e8af5b4f2eb88b552c46f846829f6a6c9f3545&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/27e8af5b4f2eb88b552c46f846829f6a6c9f3545&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="54721" author="cwestin" created="Fri, 16 Sep 2011 14:03:24 +0000"  >&lt;p&gt;This can use the same path used by having an early $match in the pipeline, which puts that into a query in order to use any existing indexes.  In this case, instead, provide the specified sort key to the query in the appropriate way.&lt;/p&gt;</comment>
                            <comment id="53734" author="cwestin" created="Tue, 13 Sep 2011 16:20:23 +0000"  >&lt;p&gt;We could do the initial release without this optimization (which doesn&apos;t seem like it would be a common use case), but linking just for tracking purposes.&lt;/p&gt;</comment>
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            <issuekey id="10927">SERVER-447</issuekey>
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