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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-58766] [Optimization] Add session pool for internal sessions</title>
                <link>https://jira.mongodb.org/browse/SERVER-58766</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;From the design:&lt;/p&gt;

&lt;p&gt;To avoid creating too many sessions, internal sessions used for a command not running in a session can come from a session pool. To make these internals sessions reusable, the pool will need to track the last used &lt;em&gt;txnNumber&lt;/em&gt; in each session and the user of that session can only run transactions with &lt;em&gt;txnNumber&lt;/em&gt; greater than the last used one. &lt;/p&gt;

&lt;p&gt;This should be very similar to the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/979ecf1842bb431badd5ad6b6025ac257742c684/src/mongo/db/s/sharding_ddl_coordinator.cpp#L336-L368&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ShardingDDLCoordinator::SessionCache&lt;/a&gt;&#160;so we may want to extend that class (and move it out of the ShardingDDLCoordinator class).&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1828278">SERVER-58766</key>
            <summary>[Optimization] Add session pool for internal sessions</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="13201">Fixed</resolution>
                                        <assignee username="jonathan.lee@mongodb.com">Jonathan Lee</assignee>
                                    <reporter username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</reporter>
                        <labels>
                    </labels>
                <created>Thu, 22 Jul 2021 11:32:40 +0000</created>
                <updated>Sun, 29 Oct 2023 21:50:32 +0000</updated>
                            <resolved>Wed, 13 Oct 2021 17:35:26 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4122173" author="xgen-internal-githook" created="Wed, 13 Oct 2021 17:32:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jonathan Lee&apos;, &apos;email&apos;: &apos;jonathan.lee@mongodb.com&apos;, &apos;username&apos;: &apos;jonatlee&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58766&quot; title=&quot;[Optimization] Add session pool for internal sessions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58766&quot;&gt;&lt;del&gt;SERVER-58766&lt;/del&gt;&lt;/a&gt; Add session pool for internal sessions&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/791308c096563937ca6e8d35e7ee326c735b17ae&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/791308c096563937ca6e8d35e7ee326c735b17ae&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1828239">SERVER-58751</issuekey>
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            <issuekey id="2147915">SERVER-70093</issuekey>
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