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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-77342] Avoid advancing vector clock twice in primary write path</title>
                <link>https://jira.mongodb.org/browse/SERVER-77342</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We advance the VectorClock twice in the primary write path, which requires taking the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/07afb715c12f99346840ffbcda8e19609e2f46fa/src/mongo/db/catalog/local_oplog_info.cpp#L80&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;hot _newOpMutex&lt;/a&gt; and the VectorClock&apos;s mutex.&lt;/p&gt;

&lt;p&gt;On the primary, we &lt;a href=&quot;https://github.com/mongodb/mongo/blob/07afb715c12f99346840ffbcda8e19609e2f46fa/src/mongo/db/catalog/local_oplog_info.cpp#L108&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;advance the VectorClock&lt;/a&gt; initially when we allocate our optimes. We advance the VectorClock &lt;a href=&quot;https://github.com/mongodb/mongo/blob/07afb715c12f99346840ffbcda8e19609e2f46fa/src/mongo/db/repl/oplog.cpp#LL466C24-L466C32&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;again in the onCommit handler&lt;/a&gt; that runs after the write commits. This is done through the call to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/07afb715c12f99346840ffbcda8e19609e2f46fa/src/mongo/db/repl/replication_coordinator_impl.cpp#L1395&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ReplicationCoordinatorExternalState::setGlobalTimestamp&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/07afb715c12f99346840ffbcda8e19609e2f46fa/src/mongo/db/repl/oplog.cpp#L2430-L2431&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;setNewTimestamp&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2346696">SERVER-77342</key>
            <summary>Avoid advancing vector clock twice in primary write path</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="louis.williams@mongodb.com">Louis Williams</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Mon, 22 May 2023 09:53:04 +0000</created>
                <updated>Sun, 29 Oct 2023 21:21:08 +0000</updated>
                            <resolved>Tue, 23 May 2023 14:52:20 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5445483" author="xgen-internal-githook" created="Tue, 23 May 2023 14:47:36 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Louis Williams&apos;, &apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77342&quot; title=&quot;Avoid advancing vector clock twice in primary write path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77342&quot;&gt;&lt;del&gt;SERVER-77342&lt;/del&gt;&lt;/a&gt; Avoid advancing vector clock twice in primary write path&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/eb548b3822e1a53224a13c7b6c96395dfb6a7afc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/eb548b3822e1a53224a13c7b6c96395dfb6a7afc&lt;/a&gt;&lt;/p&gt;</comment>
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