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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-35909] Create SessionLocker that checks for active transactions automatically</title>
                <link>https://jira.mongodb.org/browse/SERVER-35909</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The pattern comes up a bunch of &#8220;lock the session mutex and then check if there is an active transaction&#8221; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/4e8b282809ba28eb2da14435a91981a3821343e1/src/mongo/db/session.cpp#L710-L715&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/4e8b282809ba28eb2da14435a91981a3821343e1/src/mongo/db/session.cpp#L710-L715&lt;/a&gt;. Sometimes we call checkValid too. It&#8217;s not clear to me when we call one vs. the other. Making this clearer and providing a mechanism to lock the mutex and automatically make all of the required checks would prevent bugs and make the concurrency story clearer.&lt;/p&gt;</description>
                <environment></environment>
        <key id="565654">SERVER-35909</key>
            <summary>Create SessionLocker that checks for active transactions automatically</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="3">Duplicate</resolution>
                                        <assignee username="judah.schvimer@mongodb.com">Judah Schvimer</assignee>
                                    <reporter username="judah.schvimer@mongodb.com">Judah Schvimer</reporter>
                        <labels>
                            <label>prepare_optional</label>
                    </labels>
                <created>Fri, 29 Jun 2018 14:27:17 +0000</created>
                <updated>Thu, 1 Nov 2018 16:08:04 +0000</updated>
                            <resolved>Thu, 1 Nov 2018 16:08:00 +0000</resolved>
                                                                    <component>Replication</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1934834" author="judah.schvimer" created="Fri, 29 Jun 2018 14:36:51 +0000"  >&lt;p&gt;My initial idea for this would be to create an RAII type SessionLock that wraps unique_lock. Whenever you call SessionLock::lock() it makes all the required checks and then locks the internal mutex.&lt;/p&gt;</comment>
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