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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-67786] CollectionScan stage triggers redundant cursor next() call when minRecord==maxRecord</title>
                <link>https://jira.mongodb.org/browse/SERVER-67786</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;b&gt;CollectionScan&lt;/b&gt; stage is also used for finding documents by _id for clustered collections. In this case the &lt;b&gt;CollectionScan&lt;/b&gt; stage is used by setting parameters &lt;b&gt;minRecord&lt;/b&gt; and &lt;b&gt;maxRecord&lt;/b&gt; of the stage to _id. When the looked up document does not exist, then the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/53eea3da413a6ed0b4c3d91697467ccf8ad51342/src/mongo/db/exec/collection_scan.cpp#L204-L218&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;stage typically calls seekNear() and next() on the cursor&lt;/a&gt;. However, in this scenario, the next() call is redundant. This next() call can be very expensive when the storage engine needs to examine deleted entries that reside between the record returned by seekNear() and the record returned by next().&lt;/p&gt;</description>
                <environment></environment>
        <key id="2082879">SERVER-67786</key>
            <summary>CollectionScan stage triggers redundant cursor next() call when minRecord==maxRecord</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="3">Duplicate</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="mindaugas.malinauskas@mongodb.com">Mindaugas Malinauskas</reporter>
                        <labels>
                    </labels>
                <created>Tue, 5 Jul 2022 15:41:02 +0000</created>
                <updated>Mon, 5 Dec 2022 23:58:52 +0000</updated>
                            <resolved>Wed, 6 Jul 2022 08:49:59 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>3</watches>
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                            <comment id="4659565" author="louis.williams" created="Wed, 6 Jul 2022 08:41:41 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mindaugas.malinauskas%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;mindaugas.malinauskas@mongodb.com&quot;&gt;mindaugas.malinauskas@mongodb.com&lt;/a&gt; is this a duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62988&quot; title=&quot;Investigate avoiding an extra document fetch on bounded collection scans&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62988&quot;&gt;SERVER-62988&lt;/a&gt;?&lt;/p&gt;</comment>
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