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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-26316] cleanupOrphaned command is too slow </title>
                <link>https://jira.mongodb.org/browse/SERVER-26316</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I have created Sharded cluster with 3 shards. while balancer was moving the chunk, i executed count query on sharded collection &amp;amp; found that it is giving mismatched count. &lt;/p&gt;

&lt;p&gt;I came to know about cleanupOrphaned command which removes invalid documents from the shard &amp;amp; executed on the primary node. It has taken more than 4 days time (i.e.  96 hours) to remove 1.8M records. &lt;/p&gt;

&lt;p&gt;First of all why we need to run this command manually, it should have been automatically handled during balancing process.  Even after running this command, It takes too much time to remove document. Is there any faster method to clear orphaned file?&lt;/p&gt;

&lt;p&gt;Thanks.....&lt;/p&gt;


</description>
                <environment></environment>
        <key id="318804">SERVER-26316</key>
            <summary>cleanupOrphaned command is too slow </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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="abhishek.mishra@cheersin.com">abhishek mishra</reporter>
                        <labels>
                    </labels>
                <created>Mon, 26 Sep 2016 14:02:03 +0000</created>
                <updated>Mon, 26 Sep 2016 18:27:08 +0000</updated>
                            <resolved>Mon, 26 Sep 2016 18:27:08 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1393826" author="thomas.schubert" created="Mon, 26 Sep 2016 18:27:08 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=abhishek.mishra%40cheersin.com&quot; class=&quot;user-hover&quot; rel=&quot;abhishek.mishra@cheersin.com&quot;&gt;abhishek.mishra@cheersin.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for opening this ticket. I&apos;ve linked to a couple related tickets that I would recommend reviewing, voting, and watching for updates. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3645&quot; title=&quot;Sharded collection counts (on primary) can report too many results&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3645&quot;&gt;&lt;del&gt;SERVER-3645&lt;/del&gt;&lt;/a&gt; would address the issue that count commands can return too many results, and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6210&quot; title=&quot;Clean up data left behind on shards by failed migrations and failed migration cleanups&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6210&quot;&gt;&lt;del&gt;SERVER-6210&lt;/del&gt;&lt;/a&gt; would automate some or all of the cleanup process either as a periodic background job or by being called on the receiver shard when migration fails. I believe &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6210&quot; title=&quot;Clean up data left behind on shards by failed migrations and failed migration cleanups&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6210&quot;&gt;&lt;del&gt;SERVER-6210&lt;/del&gt;&lt;/a&gt; fulfills your request that this be automatically handled.&lt;/p&gt;

&lt;p&gt;I would recommend posting on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-users group&lt;/a&gt;, which provides MongoDB-related support. This would be the best place for your question regarding the performance of &lt;tt&gt;cleanupOrphaned&lt;/tt&gt;. If you post to the user group, please include additional information about your environment to help others identify possible issues. For example, which version of MongoDB are you using? which storage engine? and what are your machine&apos;s specs?&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
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