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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-41234] Concurrent step downs due to step down via heartbeat and force reconfig  should ensure that the term maintained by topology coordinator is set to TopologyCoordinator::_pendingTermUpdateDuringStepDown.</title>
                <link>https://jira.mongodb.org/browse/SERVER-41234</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Force reconfig cmd and force reconfig via heartbeat should be able to take care of updating the term &amp;amp; resetting _pendingTermUpdateDuringStepDown (like we do it in&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf322abb3069b05e6ea32afe53a31381f0c0c6df/src/mongo/db/repl/replication_coordinator_impl_heartbeat.cpp#L426-L432.&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;unconditional step down&lt;/a&gt;) if they cause step down and _pendingTermUpdateDuringStepDown is set.&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Unconditional step down&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf322abb3069b05e6ea32afe53a31381f0c0c6df/src/mongo/db/repl/replication_coordinator_impl.cpp#L3742-L3748&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;triggered&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Reconfig gets executed and&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf322abb3069b05e6ea32afe53a31381f0c0c6df/src/mongo/db/repl/topology_coordinator.cpp#L1909&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;caused the node to step down&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf322abb3069b05e6ea32afe53a31381f0c0c6df/src/mongo/db/repl/replication_coordinator_impl_heartbeat.cpp#L380&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ReplicationCoordinatorImpl::_stepDownFinish&lt;/a&gt;&#160;gets executed now.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;&lt;b&gt;This is a 4.0 bug and the fix must be backported.&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;Consequence of this bug is that this requires another heartbeat or metadata update (e.g.. during oplog fetching) to update the term again. (see&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-28290&quot; title=&quot;stepping down due to a higher term seen in a heartbeat should not discard term after stepdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-28290&quot;&gt;&lt;del&gt;SERVER-28290&lt;/del&gt;&lt;/a&gt;).&lt;/p&gt;</description>
                <environment></environment>
        <key id="771806">SERVER-41234</key>
            <summary>Concurrent step downs due to step down via heartbeat and force reconfig  should ensure that the term maintained by topology coordinator is set to TopologyCoordinator::_pendingTermUpdateDuringStepDown.</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="suganthi.mani@mongodb.com">Suganthi Mani</reporter>
                        <labels>
                    </labels>
                <created>Sun, 19 May 2019 22:16:17 +0000</created>
                <updated>Tue, 6 Dec 2022 02:59:14 +0000</updated>
                            <resolved>Fri, 13 Dec 2019 15:05:27 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
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            <issuekey id="617120">SERVER-37574</issuekey>
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