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    <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-2158] repl set primary won&apos;t elect itself is a secondary is fresher</title>
                <link>https://jira.mongodb.org/browse/SERVER-2158</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;a replica set primary will not elect itself if a secondary is fresher.  this is a &quot;legal&quot; situation so we must handle.&lt;/p&gt;

&lt;p&gt;currently it says:&lt;/p&gt;

&lt;p&gt;  Mon Nov 29 16:33:34 &lt;span class=&quot;error&quot;&gt;&amp;#91;rs Manager&amp;#93;&lt;/span&gt; replSet info not electing self, we are not freshest&lt;/p&gt;

&lt;p&gt;so what to do.  perhaps:&lt;/p&gt;

&lt;p&gt;(1) take over even if not freshest if the time gap or # of operations gap is small.  the secondary will then roll back (we&apos;ll need to test this).  when this happens, log the optimes so the operator knows what is up.&lt;br/&gt;
(2) if the gap is larger, do what it does now, however, log more on the size of the gap.  and we can have an override that says &quot;take over anyway&quot;&lt;/p&gt;

&lt;p&gt;easy to reproduce, i just tried.&lt;/p&gt;</description>
                <environment></environment>
        <key id="13820">SERVER-2158</key>
            <summary>repl set primary won&apos;t elect itself is a secondary is fresher</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="9">Done</resolution>
                                        <assignee username="kristina">Kristina Chodorow</assignee>
                                    <reporter username="dwight@mongodb.com">Dwight Merriman</reporter>
                        <labels>
                    </labels>
                <created>Mon, 29 Nov 2010 21:36:27 +0000</created>
                <updated>Tue, 12 Jul 2016 00:19:20 +0000</updated>
                            <resolved>Wed, 22 Dec 2010 23:43:32 +0000</resolved>
                                                    <fixVersion>1.7.5</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="21755" author="auto" created="Wed, 22 Dec 2010 23:43:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;kchodorow&apos;, u&apos;name&apos;: u&apos;Kristina&apos;, u&apos;email&apos;: u&apos;kristina@10gen.com&apos;}
&lt;p&gt;Message: sync against secondaries if primary is unavailable &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2158&quot; title=&quot;repl set primary won&amp;#39;t elect itself is a secondary is fresher&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2158&quot;&gt;&lt;del&gt;SERVER-2158&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/52a46867c7b862edf871df4a27f49858ff535802&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/52a46867c7b862edf871df4a27f49858ff535802&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="20797" author="dwight_10gen" created="Tue, 30 Nov 2010 01:28:56 +0000"  >&lt;p&gt;actually, you are right.  the best way to fix is to resync from the secondary and then assume primary.  let&apos;s do that.&lt;/p&gt;</comment>
                            <comment id="20793" author="eliot" created="Tue, 30 Nov 2010 00:25:35 +0000"  >&lt;p&gt;You mean if a priority=0 secondary is fresher?&lt;/p&gt;

&lt;p&gt;Need to be very careful here because with w=2 people assume data isn&apos;t lost...&lt;/p&gt;

&lt;p&gt;We can&apos;t pull operations from there?&lt;/p&gt;</comment>
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