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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-48190] Race between drop and range delete can cause it to hit an invariant</title>
                <link>https://jira.mongodb.org/browse/SERVER-48190</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="1349949">SERVER-48190</key>
            <summary>Race between drop and range delete can cause it to hit an invariant</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="13201">Fixed</resolution>
                                        <assignee username="matthew.saltz@mongodb.com">Matthew Saltz</assignee>
                                    <reporter username="randolph@mongodb.com">Randolph Tan</reporter>
                        <labels>
                    </labels>
                <created>Wed, 13 May 2020 15:58:33 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:15 +0000</updated>
                            <resolved>Wed, 13 May 2020 23:55:26 +0000</resolved>
                                                    <fixVersion>4.4.0-rc6</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="3085077" author="xgen-internal-githook" created="Thu, 14 May 2020 00:11:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Matthew Saltz&apos;, &apos;email&apos;: &apos;matthew.saltz@mongodb.com&apos;, &apos;username&apos;: &apos;saltzm&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48190&quot; title=&quot;Race between drop and range delete can cause it to hit an invariant&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48190&quot;&gt;&lt;del&gt;SERVER-48190&lt;/del&gt;&lt;/a&gt; Acquire CSRLock in shared mode before submitting ranges for deletion&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 7404de00911b537a78074370b3643d774aaa9dd3)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/abf419c46ca4df9b6f3948e450dfa7d8f8ac0a87&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/abf419c46ca4df9b6f3948e450dfa7d8f8ac0a87&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3084917" author="xgen-internal-githook" created="Wed, 13 May 2020 21:58:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Matthew Saltz&apos;, &apos;email&apos;: &apos;matthew.saltz@mongodb.com&apos;, &apos;username&apos;: &apos;saltzm&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48190&quot; title=&quot;Race between drop and range delete can cause it to hit an invariant&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48190&quot;&gt;&lt;del&gt;SERVER-48190&lt;/del&gt;&lt;/a&gt; Acquire CSRLock in shared mode before submitting ranges for deletion&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9640339b565c6b9504bc0d6519f44dec1c8c0aff&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9640339b565c6b9504bc0d6519f44dec1c8c0aff&lt;/a&gt;&lt;/p&gt;</comment>
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                            <customfieldvalue>&lt;p&gt;1. Migration cleanup decides to kick off range deletion on source.&lt;br/&gt;
2. Collections gets dropped.&lt;br/&gt;
3. SSV comes in to reset shard version to 0.&lt;br/&gt;
4. Range deletion grabs &lt;a href=&quot;https://github.com/mongodb/mongo/blob/84fd6eb9c0a700329dc0750261d05dd6741791cc/src/mongo/db/s/migration_util.cpp#L253&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;collection sharding state&lt;/a&gt; under collection IS lock.&lt;br/&gt;
5. Metadata refreshes to become unsharded under collection IX lock.&lt;br/&gt;
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