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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>[DOCS-10046] cleanupOrphaned performance clarification</title>
                <link>https://jira.mongodb.org/browse/DOCS-10046</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/cleanupOrphaned/#performance&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;cleanupOrphaned Performance section&lt;/a&gt; has wording that implies a document (or collection) scan:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;cleanupOrphaned scans the documents in the shard to determine whether the documents belong to the shard. As such, running cleanupOrphaned can impact performance; however, performance will depend on the number of orphaned documents in the range.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;However, &lt;tt&gt;cleanupOrphaned&lt;/tt&gt; only makes sense with the context of the shard key so presumably uses the shard key index. The &lt;tt&gt;startingFromKey&lt;/tt&gt; parameter defaults to &lt;tt&gt;minKey&lt;/tt&gt; and is only valid if it matches the shard key pattern:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/s/cleanup_orphaned_cmd.cpp#L97&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/db/s/cleanup_orphaned_cmd.cpp#L97&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="368506">DOCS-10046</key>
            <summary>cleanupOrphaned performance clarification</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="13203">Gone away</resolution>
                                        <assignee username="stephen.steneker@mongodb.com">Stennie Steneker</assignee>
                                    <reporter username="stephen.steneker@mongodb.com">Stennie Steneker</reporter>
                        <labels>
                    </labels>
                <created>Tue, 28 Mar 2017 11:58:50 +0000</created>
                <updated>Mon, 30 Oct 2023 21:15:18 +0000</updated>
                            <resolved>Mon, 17 May 2021 21:18:36 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3778437" author="jeffrey.allen" created="Mon, 17 May 2021 21:18:36 +0000"  >&lt;p&gt;Closing as &quot;Gone Away&quot; but happy to reopen if there are adjustments to make.&lt;/p&gt;</comment>
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