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    <title>MongoDB Jira</title>
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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-14097] Execution Explain for Find</title>
                <link>https://jira.mongodb.org/browse/SERVER-14097</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Get explain of find() to work through the legacy $explain at &#8220;executionStats&#8221; and &#8220;allPlansExecution&#8221; verbosities&lt;/p&gt;

&lt;h5&gt;&lt;a name=&quot;Implementationstrategy%3A&quot;&gt;&lt;/a&gt;Implementation strategy:&lt;/h5&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Use an updated version of the PlanStage::getStats(). Just add any additional fields to getStats() as needed to support the new explain spec.&lt;/li&gt;
	&lt;li&gt;Old fields will be kept in place even if not needed for explain (they may be useful going forward).&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="139344">SERVER-14097</key>
            <summary>Execution Explain for Find</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="david.storch@mongodb.com">David Storch</assignee>
                                    <reporter username="ian@mongodb.com">Ian Whalen</reporter>
                        <labels>
                    </labels>
                <created>Fri, 30 May 2014 17:40:05 +0000</created>
                <updated>Thu, 2 Aug 2018 21:23:04 +0000</updated>
                            <resolved>Fri, 27 Jun 2014 14:28:59 +0000</resolved>
                                                    <fixVersion>2.7.3</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="636344" author="xgen-internal-githook" created="Fri, 27 Jun 2014 14:26:24 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;dstorch&apos;, u&apos;name&apos;: u&apos;David Storch&apos;, u&apos;email&apos;: u&apos;david.storch@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-14097&quot; title=&quot;Execution Explain for Find&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-14097&quot;&gt;&lt;del&gt;SERVER-14097&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-14098&quot; title=&quot;Explain Command for Explaining Count&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-14098&quot;&gt;&lt;del&gt;SERVER-14098&lt;/del&gt;&lt;/a&gt; execution-level explain for .find() and .count()&lt;/p&gt;

&lt;p&gt;The explain implementation for .find() and .count() is feature complete. To use&lt;br/&gt;
the .find() implementation, set the enableNewExplain setParameter to true.&lt;/p&gt;

&lt;p&gt;Count operations are explained through the new explain command, e.g.&lt;br/&gt;
db.runCommand({explain: {count: &quot;coll&quot;, query: &lt;/p&gt;
{foo: &quot;bar&quot;}
&lt;p&gt;}}).&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1cc6be662ccd83b0341ef1f31f8f4ad30dc69451&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1cc6be662ccd83b0341ef1f31f8f4ad30dc69451&lt;/a&gt;&lt;/p&gt;</comment>
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