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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-61336] Relax mutex locks in FIleCopyBasedInitialSyncer</title>
                <link>https://jira.mongodb.org/browse/SERVER-61336</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Member variables in FileCopyBasedInitialSyncer may be accessed without a lock from within the main flow of control (regardless of the underlying executor thread), if they are only accessed from the main flow of control (should be annotated (X)).  We have been locking more than that, which results in a deadlock when switching storage.&lt;/p&gt;

&lt;p&gt;In particular, the class mutex should not be held while a database lock (i.e. global X) is held, regardless of order.  This is because mutexes are not interruptible, so if a thread with an opCtx and no database locks blocks on the mutex, and we attempt to interrupt that opCtx as part of the storage change, there is a deadlock.&lt;/p&gt;
</description>
                <environment></environment>
        <key id="1921024">SERVER-61336</key>
            <summary>Relax mutex locks in FIleCopyBasedInitialSyncer</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.russotto@mongodb.com">Matthew Russotto</assignee>
                                    <reporter username="matthew.russotto@mongodb.com">Matthew Russotto</reporter>
                        <labels>
                    </labels>
                <created>Tue, 9 Nov 2021 01:27:33 +0000</created>
                <updated>Sun, 29 Oct 2023 21:46:19 +0000</updated>
                            <resolved>Thu, 11 Nov 2021 13:28:20 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4180224" author="xgen-internal-githook" created="Wed, 10 Nov 2021 14:11:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Matthew Russotto&apos;, &apos;email&apos;: &apos;matthew.russotto@mongodb.com&apos;, &apos;username&apos;: &apos;mtrussotto&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61336&quot; title=&quot;Relax mutex locks in FIleCopyBasedInitialSyncer&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61336&quot;&gt;&lt;del&gt;SERVER-61336&lt;/del&gt;&lt;/a&gt; Relax mutex locks in FIleCopyBasedInitialSyncer&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/mongo-enterprise-modules/commit/8671b18e47391055b9a443ae31930fddb59a6788&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo-enterprise-modules/commit/8671b18e47391055b9a443ae31930fddb59a6788&lt;/a&gt;&lt;/p&gt;</comment>
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