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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-43754] Refactor stepDown to wait for majority and electable nodes more precisely</title>
                <link>https://jira.mongodb.org/browse/SERVER-43754</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, &lt;tt&gt;stepDown&lt;/tt&gt; uses&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/blob/c8b9b377df703d7941ba291d9ce504a27440c093/src/mongo/db/repl/replication_coordinator_impl.cpp#L2067-L2068&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ThreadWaiter and WaiterGuard&lt;/a&gt; always keeps the waiter in the list as long as the WaiterGuard is in scope. The function&apos;s implementation is a bit confusing at the moment. What it really needs to do is to wait for majority with at least one electable node. The implementation now keeps the majority waiter in the list even though majority is satisfied, only because it wants to use the waiter list notification as an indicator of oplog changes so it can check if the majority nodes that the write has replicated to contains at least one electable node. If no, it goes back into waiting until another node&apos;s OpTime changes then re-check again to avoid polling.&lt;/p&gt;

&lt;p&gt;Ideally, this should wait for majority then &lt;a href=&quot;https://github.com/mongodb/mongo/blob/12011588f517f910ea5b6a34591755b3ca04223d/src/mongo/db/repl/repl_set_config.cpp#L796&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;$stepDownCheck&lt;/a&gt;. Or somehow combine the two rules into one.&lt;/p&gt;</description>
                <environment></environment>
        <key id="947928">SERVER-43754</key>
            <summary>Refactor stepDown to wait for majority and electable nodes more precisely</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="lingzhi.deng@mongodb.com">Lingzhi Deng</reporter>
                        <labels>
                    </labels>
                <created>Tue, 1 Oct 2019 21:38:51 +0000</created>
                <updated>Tue, 6 Dec 2022 02:45:51 +0000</updated>
                            <resolved>Fri, 13 Dec 2019 15:06:10 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
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