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    <title>MongoDB Jira</title>
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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-74781] Investigate behavior of ScopedAdmissionPriorityForLock when locker is swapped</title>
                <link>https://jira.mongodb.org/browse/SERVER-74781</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;tt&gt;ScopedAdmissionPriorityForLock&lt;/tt&gt; stores a pointer to the lock state (which is typical for locker-related RAII types), but in some cases &lt;a href=&quot;https://github.com/mongodb/mongo/blob/95095d506bedfccb3895b0aa434eaa03870e07fd/src/mongo/db/transaction/transaction_participant.cpp#L1306&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the locker gets swapped out with another one&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2286593">SERVER-74781</key>
            <summary>Investigate behavior of ScopedAdmissionPriorityForLock when locker is swapped</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="9">Done</resolution>
                                        <assignee username="haley.connelly@mongodb.com">Haley Connelly</assignee>
                                    <reporter username="gregory.noma@mongodb.com">Gregory Noma</reporter>
                        <labels>
                    </labels>
                <created>Mon, 13 Mar 2023 13:15:46 +0000</created>
                <updated>Fri, 12 May 2023 16:12:45 +0000</updated>
                            <resolved>Fri, 12 May 2023 16:12:45 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5421086" author="haley.connelly" created="Fri, 12 May 2023 16:12:23 +0000"  >&lt;p&gt;The RAII-style pattern used for ScopedAdmissionPriorityForLock, which introduces scoped modifications to part of the Locker state, is a &lt;a href=&quot;https://github.com/10gen/mongo/blob/d4e78b7d757ccf1225bcd87d44ade39d1ce38586/src/mongo/db/concurrency/locker.h#L605-L775&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;common pattern&lt;/a&gt; in the codebase. However, the pattern assumes the Locker in use at the start of the scope stays alive for the remainder of the scope.&lt;/p&gt;

&lt;p&gt;Closing this ticket in favor of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77084&quot; title=&quot;Investigate swapLockState() usage&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77084&quot;&gt;&lt;del&gt;SERVER-77084&lt;/del&gt;&lt;/a&gt;, which will investigate the usage of swapLockState() in our codebase.&#160;&lt;/p&gt;</comment>
                            <comment id="5420362" author="haley.connelly" created="Fri, 12 May 2023 12:37:36 +0000"  >&lt;p&gt;For clarification, it wasn&apos;t clear &lt;a href=&quot;https://github.com/mongodb/mongo/blob/10c54d1573b37072427d056180f26b98b50af335/src/mongo/db/repl/oplog_applier_impl.cpp#L604&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;it was unsafe&lt;/a&gt; to use the ScopedAdmissionPriorityForLock RAII type in OplogApplierImpl::_applyOplogBatch until tests began to fail during development.&lt;/p&gt;</comment>
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                                            <outwardlinks description="related to">
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            <issuekey id="2279709">SERVER-74544</issuekey>
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            <issuekey id="2339504">SERVER-77084</issuekey>
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