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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-52800] Add &quot;force&quot; option to cleanupOrphaned that runs the old (pre-resumable range deleter) logic</title>
                <link>https://jira.mongodb.org/browse/SERVER-52800</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This came out of a product sync discussion.&lt;/p&gt;

&lt;p&gt;There may be some cases where orphans are created on a shard outside of migrations, e.g. if someone writes directly to the shard.&lt;/p&gt;

&lt;p&gt;For cases like this, the old cleanupOrphaned logic that actively deletes orphans from unowned ranges (rather than waiting for all range deletion tasks created by migrations to complete) would still be useful.&lt;/p&gt;

&lt;p&gt;We should add a &quot;force: true&quot; option (or perhaps with a different name) to cleanupOrphaned that runs the old logic. It should be used sparingly, since the old cleanupOrphaned logic had several races (particularly &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42352&quot; title=&quot;cleanupOrphaned does not respect migration protocol on failover&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42352&quot;&gt;&lt;del&gt;SERVER-42352&lt;/del&gt;&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;The v4.4 branch already &lt;a href=&quot;https://github.com/mongodb/mongo/blob/15e73dc5738d2278b688f8929aee605fe4279b0e/src/mongo/db/s/cleanup_orphaned_cmd.cpp#L81-L251&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;chose the old or new logic based on FCV&lt;/a&gt;, so master could be made to do something similar based on the &quot;force: true&quot; option.&#160; We should also bring back the tests of the old cleanupOrphaned logic deleted &lt;a href=&quot;https://mongodbcr.appspot.com/592500001/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1539576">SERVER-52800</key>
            <summary>Add &quot;force&quot; option to cleanupOrphaned that runs the old (pre-resumable range deleter) logic</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-sharding-emea">[DO NOT USE] Backlog - Sharding EMEA</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                            <label>sharding-wfbf-sprint</label>
                    </labels>
                <created>Wed, 11 Nov 2020 23:13:30 +0000</created>
                <updated>Tue, 6 Dec 2022 01:44:56 +0000</updated>
                            <resolved>Thu, 28 Oct 2021 16:02:20 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="4155041" author="kaloian.manassiev" created="Thu, 28 Oct 2021 16:52:25 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=bernard.gorman&quot; class=&quot;user-hover&quot; rel=&quot;bernard.gorman&quot;&gt;bernard.gorman&lt;/a&gt;&#160;has written a script, which allows range deletion to be performed at the client side, under the assumption that the customer has stopped the Balancer and ensured that there are no manual migrations (this ensures stability of the routing/filtering information).&lt;/p&gt;

&lt;p&gt;The script is located &lt;a href=&quot;https://github.com/10gen/employees/blob/master/home/bernard.gorman/mongo-tools/parallel-range-deleter/parallel_range_deleter.js&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="4154875" author="ratika.gandhi" created="Thu, 28 Oct 2021 16:02:11 +0000"  >&lt;p&gt;There is a script that allows you to clean up orphans which can be run manually to solve this problem. Closing this ticket as Won&apos;t fix. Kal will link the script here.&#160;&lt;/p&gt;</comment>
                            <comment id="4138349" author="kaloian.manassiev" created="Thu, 21 Oct 2021 11:58:06 +0000"  >&lt;p&gt;We should spend one WFBF day to evaluate the feasibility of bringing back the old range deletion code in a safe way (it obeys the ownership correctly). Whoever picks it up, please evaluate that cost and then put back in Needs Triage.&lt;/p&gt;</comment>
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