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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-57186] Catchup takeover should not happen when last applied optime is in current term</title>
                <link>https://jira.mongodb.org/browse/SERVER-57186</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We currently initiate catchup takeover when we get a heartbeat, no election is occurring and the primary&apos;s optime is behind a secondary node&apos;s optime.  In a chaining situation, the primary&apos;s optime could be staler than our own optime because we&apos;re receiving writes through a different path (OplogFetcher), and not updating the primary&apos;s optime based on it.  This will cause us to initiate catchup takeover, and immediately cancel it when we realize another secondary is ahead of us, as in HELP-24655&lt;/p&gt;

&lt;p&gt;I believe that we are potentially in a catchup situation only when our last applied optime&apos;s term is less than our election term; if it is the same, that means the current primary has successfully caught up.  Checking this would avoid scheduling and canceling catchup takeover.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1756508">SERVER-57186</key>
            <summary>Catchup takeover should not happen when last applied optime is in current term</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="vesselina.ratcheva@mongodb.com">Vesselina Ratcheva</assignee>
                                    <reporter username="matthew.russotto@mongodb.com">Matthew Russotto</reporter>
                        <labels>
                            <label>former-quick-wins</label>
                    </labels>
                <created>Tue, 25 May 2021 15:48:59 +0000</created>
                <updated>Sun, 29 Oct 2023 21:53:06 +0000</updated>
                            <resolved>Mon, 14 Jun 2021 22:56:51 +0000</resolved>
                                                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="3880384" author="xgen-internal-githook" created="Wed, 16 Jun 2021 08:28:45 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Vesselina Ratcheva&apos;, &apos;email&apos;: &apos;vesselina.ratcheva@10gen.com&apos;, &apos;username&apos;: &apos;vessy-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57186&quot; title=&quot;Catchup takeover should not happen when last applied optime is in current term&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57186&quot;&gt;&lt;del&gt;SERVER-57186&lt;/del&gt;&lt;/a&gt; Do not attempt catchup takeover when last applied optime is in current term&lt;br/&gt;
Branch: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34632&quot; title=&quot;config.chunks change to config.cache.chunks creates a collection long name after upgrade&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34632&quot;&gt;SERVER-34632&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1cc2e70f049bb3ac1c4e87581f5d8d51980b1a57&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1cc2e70f049bb3ac1c4e87581f5d8d51980b1a57&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3877368" author="xgen-internal-githook" created="Mon, 14 Jun 2021 22:51:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Vesselina Ratcheva&apos;, &apos;email&apos;: &apos;vesselina.ratcheva@10gen.com&apos;, &apos;username&apos;: &apos;vessy-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57186&quot; title=&quot;Catchup takeover should not happen when last applied optime is in current term&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57186&quot;&gt;&lt;del&gt;SERVER-57186&lt;/del&gt;&lt;/a&gt; Do not attempt catchup takeover when last applied optime is in current term&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1cc2e70f049bb3ac1c4e87581f5d8d51980b1a57&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1cc2e70f049bb3ac1c4e87581f5d8d51980b1a57&lt;/a&gt;&lt;/p&gt;</comment>
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