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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-40367] Use lastCommitted and applied wall clock times to calculate replication lag</title>
                <link>https://jira.mongodb.org/browse/SERVER-40367</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, replication lag for Flow Control is calculated using &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf14abb8e454edc042d5f4ad1768f19321135a79/src/mongo/db/storage/flow_control.cpp#L128-L130&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;OpTimes&lt;/a&gt;. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-40078&quot; title=&quot;Add wall clock time corresponding to lastCommitted optime to optimes subdocument&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-40078&quot;&gt;&lt;del&gt;SERVER-40078&lt;/del&gt;&lt;/a&gt; and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-40080&quot; title=&quot;Add lastApplied and lastDurable wall clock times to replSetGetStatus optimes subdocument&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-40080&quot;&gt;&lt;del&gt;SERVER-40080&lt;/del&gt;&lt;/a&gt; will allow replication lag to be calculated in milliseconds granularity using wall clock times. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-40078&quot; title=&quot;Add wall clock time corresponding to lastCommitted optime to optimes subdocument&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-40078&quot;&gt;&lt;del&gt;SERVER-40078&lt;/del&gt;&lt;/a&gt; will introduce a dependency on FCV, so the Flow Control algorithm will also have to be gated on FCV.&lt;/p&gt;</description>
                <environment></environment>
        <key id="724593">SERVER-40367</key>
            <summary>Use lastCommitted and applied wall clock times to calculate replication lag</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="maria.vankeulen@mongodb.com">Maria van Keulen</assignee>
                                    <reporter username="maria.vankeulen@mongodb.com">Maria van Keulen</reporter>
                        <labels>
                    </labels>
                <created>Thu, 28 Mar 2019 05:41:16 +0000</created>
                <updated>Sun, 29 Oct 2023 22:22:33 +0000</updated>
                            <resolved>Mon, 22 Apr 2019 15:12:15 +0000</resolved>
                                                    <fixVersion>4.1.11</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2220543" author="xgen-internal-githook" created="Mon, 22 Apr 2019 15:11:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;maria@mongodb.com&apos;, &apos;name&apos;: &apos;Maria van Keulen&apos;, &apos;username&apos;: &apos;mvankeulen94&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-40367&quot; title=&quot;Use lastCommitted and applied wall clock times to calculate replication lag&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-40367&quot;&gt;&lt;del&gt;SERVER-40367&lt;/del&gt;&lt;/a&gt; Calculate Flow Control repl lag with wall clock times&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/03dada404f6d301c72cf2148c6b27b0e625e043d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/03dada404f6d301c72cf2148c6b27b0e625e043d&lt;/a&gt;&lt;/p&gt;</comment>
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