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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-70916] Remove unnecessary acquisition of mutex from access blocker registry method</title>
                <link>https://jira.mongodb.org/browse/SERVER-70916</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;tt&gt;TenantMigrationAccessBlockerRegistry::getAsyncBlockingOperationsExecutor()&lt;/tt&gt; currently attempts to acquire the registry mutex in order to access &lt;tt&gt;_asyncBlockingOperationsExecutor&lt;/tt&gt;. This can lead to a deadlock with &lt;tt&gt;TenantMigrationRecipientAccessBlocker&lt;/tt&gt; or &lt;tt&gt;TenantMigrationDonorAccessBlocker&lt;/tt&gt;, since these classes call back into the registry. Ideally, we should avoid calling back into the registry from members of the registry, but refactoring this and moving &lt;tt&gt;_asyncBlockingOperationsExecutor&lt;/tt&gt; is non-trivial at this point. Instead, since &lt;tt&gt;_asyncBlockingOperationsExecutor&lt;/tt&gt; is created when the registry is instantiated and reset only when it is shut down/destroyed, we can avoid synchronization entirely for this executor.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2168898">SERVER-70916</key>
            <summary>Remove unnecessary acquisition of mutex from access blocker registry method</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="christopher.caplinger@mongodb.com">Christopher Caplinger</assignee>
                                    <reporter username="christopher.caplinger@mongodb.com">Christopher Caplinger</reporter>
                        <labels>
                    </labels>
                <created>Thu, 27 Oct 2022 19:07:30 +0000</created>
                <updated>Sun, 29 Oct 2023 21:31:22 +0000</updated>
                            <resolved>Mon, 7 Nov 2022 23:16:33 +0000</resolved>
                                                    <fixVersion>6.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4956232" author="xgen-internal-githook" created="Fri, 4 Nov 2022 19:19:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Christopher Caplinger&apos;, &apos;email&apos;: &apos;christopher.caplinger@mongodb.com&apos;, &apos;username&apos;: &apos;UnicodeSnowman&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70916&quot; title=&quot;Remove unnecessary acquisition of mutex from access blocker registry method&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70916&quot;&gt;&lt;del&gt;SERVER-70916&lt;/del&gt;&lt;/a&gt;: Don&apos;t acquire mutex in blocker registry method&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e9b4cc2cfefad438838906eefff59c7bc5c412f3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e9b4cc2cfefad438838906eefff59c7bc5c412f3&lt;/a&gt;&lt;/p&gt;</comment>
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