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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-33516] make _configsvrCreateCommand take the database distlock to prevent concurrent movePrimary</title>
                <link>https://jira.mongodb.org/browse/SERVER-33516</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Originally, I was thinking _configsvrCreateCommand, _configsvrDropCollection, and _configsvrDropDatabase should send the dbVersion when targeting the primary shard, since a concurrent movePrimary could happen.&lt;/p&gt;

&lt;p&gt;Then I realized &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.7.2/src/mongo/db/s/config/configsvr_drop_collection_command.cpp#L122-L123&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;_configsvrDropCollection&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.7.2/src/mongo/db/s/config/configsvr_drop_database_command.cpp#L113-L114&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;_configsvrDropDatabase&lt;/a&gt; already take a database distlock, which &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.7.2/src/mongo/db/s/config/configsvr_move_primary_command.cpp#L148-L149&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;movePrimary also takes&lt;/a&gt;, and therefore it&apos;s not possible for a movePrimary to happen concurrently with these.&lt;/p&gt;

&lt;p&gt;So, the easiest thing is to make _configsvrCreateCommand, which targets the primary shard to place the new collection on, also take the database distlock, probably around &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.7.2/src/mongo/db/s/config/configsvr_create_collection_command.cpp#L113&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="502987">SERVER-33516</key>
            <summary>make _configsvrCreateCommand take the database distlock to prevent concurrent movePrimary</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="janna.golden@mongodb.com">Janna Golden</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                    </labels>
                <created>Tue, 27 Feb 2018 16:29:28 +0000</created>
                <updated>Sun, 29 Oct 2023 22:34:24 +0000</updated>
                            <resolved>Tue, 6 Mar 2018 20:51:38 +0000</resolved>
                                                    <fixVersion>3.7.3</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1825086" author="xgen-internal-githook" created="Tue, 6 Mar 2018 20:51:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;name&apos;: &apos;jannaerin&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33516&quot; title=&quot;make _configsvrCreateCommand take the database distlock to prevent concurrent movePrimary&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33516&quot;&gt;&lt;del&gt;SERVER-33516&lt;/del&gt;&lt;/a&gt; Make _configsvrCreateCollection take the db distlock to prevent conncurrent movePrimary&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5da505eb1c4f81cbaa22860fd2a9453f10e81a62&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5da505eb1c4f81cbaa22860fd2a9453f10e81a62&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="409608">SERVER-30402</issuekey>
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            <issuekey id="549700">SERVER-35226</issuekey>
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