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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-85870] Avoid waking up ready waiters twice when updating lastDurable opTime</title>
                <link>https://jira.mongodb.org/browse/SERVER-85870</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Whenever we update the lastDurable timestamp, we do two things:&lt;/p&gt;

&lt;p&gt;1) &lt;a href=&quot;https://github.com/10gen/mongo/blob/a24035a/src/mongo/db/repl/replication_coordinator_impl.cpp#L1623&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Update `lastCommitted` and `commit point` if WriteConcernMajorityShouldJournal == true&lt;/a&gt;, which would eventually call `_wakeReadyWaiters()` if the committed point is advanced.&lt;/p&gt;

&lt;p&gt;2) Right after the above step, &lt;a href=&quot;https://github.com/10gen/mongo/blob/a24035a/src/mongo/db/repl/replication_coordinator_impl.cpp#L1627&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;call `_wakeReadyWaiters` again&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This seems to be duplicate work as they are called under the same mutex, we could consider skip calling `_wakeReadyWaiters` in step 1) and only walk through all the waiters in step 2).&lt;/p&gt;

&lt;p&gt;Note this is based on code inspection, we should double check this before doing the changes.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2560071">SERVER-85870</key>
            <summary>Avoid waking up ready waiters twice when updating lastDurable opTime</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="3" iconUrl="https://jira.mongodb.org/images/icons/statuses/inprogress.png" description="This issue is being actively worked on at the moment by the assignee.">In Progress</status>
                    <statusCategory id="4" key="indeterminate" colorName="inprogress"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="brad.cater@mongodb.com">Brad Cater</assignee>
                                    <reporter username="wenbin.zhu@mongodb.com">Wenbin Zhu</reporter>
                        <labels>
                            <label>PM-3489-Milestone-MiscImprovement-CP</label>
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                <created>Mon, 29 Jan 2024 17:44:25 +0000</created>
                <updated>Mon, 5 Feb 2024 17:16:57 +0000</updated>
                                                                                                <votes>0</votes>
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