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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-81969] Make cluster create commands yield sessions before running commands against the config shard</title>
                <link>https://jira.mongodb.org/browse/SERVER-81969</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After PM-635, a mongod can have both shard role and router role. For a mongod acting as a router for some transaction that performs an insert against some non-existing database, the implicit database creation can hang if the mongod is also the configsvr primary and shardsvr primary for some shard.&#160;&#160;&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;While executing the cluster insert, the mongod acting as a router checks out the session for the transaction. It later finds out that it needs to implicitly create the database so it runs _configsvrCreateDatabase against the config primary (which is itself).&lt;/li&gt;
	&lt;li&gt;While executing _configsvrCreateDatabase, the mongod tries to check out the session but couldn&apos;t because the session was checked out by the opCtx for the insert command from step 1.&#160;&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;The proposal here is to make ShardRemote to yield the session &lt;a href=&quot;https://github.com/10gen/mongo/blob/1a77b9c2182a01870262fac6b9e4c6df2dc05fa5/src/mongo/s/cluster_ddl.cpp#L125&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;&#160;and unyield the session&#160;&lt;a href=&quot;https://github.com/10gen/mongo/blob/1a77b9c2182a01870262fac6b9e4c6df2dc05fa5/src/mongo/s/cluster_ddl.cpp#L133&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;&#160;just like what we&#160;&lt;a href=&quot;https://github.com/10gen/mongo/blob/eced867739c05384f20dbebdcde50916d9ab8420/src/mongo/s/async_requests_sender.cpp#L135-L137&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;made&lt;/a&gt; the AsyncRequestSender do.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2469352">SERVER-81969</key>
            <summary>Make cluster create commands yield sessions before running commands against the config shard</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="cheahuychou.mao@mongodb.com">Cheahuychou Mao</assignee>
                                    <reporter username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</reporter>
                        <labels>
                    </labels>
                <created>Mon, 9 Oct 2023 04:56:53 +0000</created>
                <updated>Tue, 14 Nov 2023 21:29:00 +0000</updated>
                            <resolved>Tue, 14 Nov 2023 21:29:00 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5880035" author="xgen-internal-githook" created="Tue, 14 Nov 2023 20:04:14 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Cheahuychou Mao&apos;, &apos;email&apos;: &apos;cheahuychou.mao@mongodb.com&apos;, &apos;username&apos;: &apos;cheahuychou&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-81969&quot; title=&quot;Make cluster create commands yield sessions before running commands against the config shard&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-81969&quot;&gt;&lt;del&gt;SERVER-81969&lt;/del&gt;&lt;/a&gt; Make cluster create database commands yield sessions before running commands against the config shard&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7a7902cc91413258af1d20349d49bd52ac8cb43b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7a7902cc91413258af1d20349d49bd52ac8cb43b&lt;/a&gt;&lt;/p&gt;</comment>
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