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    <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-48152] renameCollectionAndDropTarget() should check for background operations before calling preRenameCollection()</title>
                <link>https://jira.mongodb.org/browse/SERVER-48152</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is related to a build failure on non-document level locking storage engines.&lt;/p&gt;

&lt;p&gt;The call to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e2602ad053b2120982fbcac8e33e1ad64e6ec30a/src/mongo/db/catalog/rename_collection.cpp#L246-L247&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;OpObserver::preRenameCollection here&lt;/a&gt; will get the locks on the Oplog and maintain them during the duration of the WriteUnitOfWork. The check for assertNoIndexBuildInProgForCollection() requires the IndexBuildsCoordinator _mutex. But if we have an operation that is already holding the _mutex and is waiting for the Oplog locks, we will deadlock.&lt;/p&gt;

&lt;p&gt;To solve this, we should check for background operations prior to calling preRenameCollection().&lt;/p&gt;</description>
                <environment></environment>
        <key id="1348678">SERVER-48152</key>
            <summary>renameCollectionAndDropTarget() should check for background operations before calling preRenameCollection()</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="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</reporter>
                        <labels>
                    </labels>
                <created>Tue, 12 May 2020 17:57:10 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:19 +0000</updated>
                            <resolved>Tue, 12 May 2020 20:09:35 +0000</resolved>
                                                    <fixVersion>4.4.0-rc6</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3081863" author="xgen-internal-githook" created="Tue, 12 May 2020 20:20:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48152&quot; title=&quot;renameCollectionAndDropTarget() should check for background operations before calling preRenameCollection()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48152&quot;&gt;&lt;del&gt;SERVER-48152&lt;/del&gt;&lt;/a&gt; renameCollectionAndDropTarget() should check for background operations before calling preRenameCollection()&lt;/p&gt;

&lt;p&gt;(cherry picked from commit c4c5768798b72027a7b40eb0bbf4455f7e9564b9)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/56b6e3132abf3f9efdb579081053b083323790de&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/56b6e3132abf3f9efdb579081053b083323790de&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3081770" author="xgen-internal-githook" created="Tue, 12 May 2020 19:38:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48152&quot; title=&quot;renameCollectionAndDropTarget() should check for background operations before calling preRenameCollection()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48152&quot;&gt;&lt;del&gt;SERVER-48152&lt;/del&gt;&lt;/a&gt; renameCollectionAndDropTarget() should check for background operations before calling preRenameCollection()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c4c5768798b72027a7b40eb0bbf4455f7e9564b9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c4c5768798b72027a7b40eb0bbf4455f7e9564b9&lt;/a&gt;&lt;/p&gt;</comment>
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