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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-11032] Do not veto if &quot;primary&quot; is the node trying to be elected</title>
                <link>https://jira.mongodb.org/browse/SERVER-11032</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;div class=&quot;panel&quot; style=&quot;background-color: #EEEEEE;border-color: #ccc;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;border-bottom-color: #ccc;background-color: #6CB33F;&quot;&gt;&lt;b&gt;Issue Status as of October 22nd, 2013&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #EEEEEE;&quot;&gt;
&lt;p&gt;&lt;b&gt;ISSUE SUMMARY&lt;/b&gt;&lt;br/&gt;
Re-election of a primary can be delayed because of a veto from another member of the replica set.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;USER IMPACT&lt;/b&gt;&lt;br/&gt;
This issue can manifest if a replica set election is triggered and a member has not seen that the (old) primary has already stepped down.  This will occur most frequently when there is a replica set reconfiguration event combined with either network latency or a node is overloaded.  This fix shortens the time it takes to re-elect the primary; it would eventually get elected when the stepdown state is processed and it stops vetoing.&lt;/p&gt;

&lt;p&gt;It is present in all versions of MongoDB prior to and including v2.4.6.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;SOLUTION&lt;/b&gt;&lt;br/&gt;
Don&apos;t veto former primary from re-electing itself.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;WORKAROUNDS&lt;/b&gt;&lt;br/&gt;
None.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;PATCHES&lt;/b&gt;&lt;br/&gt;
Production release v2.4.7 contains the fix for this issue, and production release v2.6.0 will contain the fix as well.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;h4&gt;&lt;a name=&quot;OriginalDescription&quot;&gt;&lt;/a&gt;Original Description&lt;/h4&gt;

&lt;p&gt;This can happen if the member has a stale view of the world believing that there is a primary.&lt;br/&gt;
Example log:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;not electing self, bar:27017 would veto with &apos;foo:27017 is trying to elect itself but foo:27017 is already primary and more up-to-date&apos;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;</description>
                <environment></environment>
        <key id="92625">SERVER-11032</key>
            <summary>Do not veto if &quot;primary&quot; is the node trying to be elected</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="scotthernandez">Scott Hernandez</assignee>
                                    <reporter username="scotthernandez">Scott Hernandez</reporter>
                        <labels>
                            <label>elections</label>
                    </labels>
                <created>Thu, 3 Oct 2013 19:21:18 +0000</created>
                <updated>Mon, 11 Jul 2016 17:38:20 +0000</updated>
                            <resolved>Fri, 4 Oct 2013 16:00:13 +0000</resolved>
                                    <version>2.4.6</version>
                                    <fixVersion>2.4.7</fixVersion>
                    <fixVersion>2.5.3</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="435875" author="auto" created="Fri, 4 Oct 2013 16:48:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;scotthernandez&apos;, u&apos;name&apos;: u&apos;Scott Hernandez&apos;, u&apos;email&apos;: u&apos;scotthernandez@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-11032&quot; title=&quot;Do not veto if &amp;quot;primary&amp;quot; is the node trying to be elected&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-11032&quot;&gt;&lt;del&gt;SERVER-11032&lt;/del&gt;&lt;/a&gt;: Do not veto if primary is the node trying to be elected&lt;br/&gt;
Branch: v2.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c53182403aae0eae655c34b848a61de92fd92566&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c53182403aae0eae655c34b848a61de92fd92566&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="435796" author="auto" created="Fri, 4 Oct 2013 15:07:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;scotthernandez&apos;, u&apos;name&apos;: u&apos;Scott Hernandez&apos;, u&apos;email&apos;: u&apos;scotthernandez@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-11032&quot; title=&quot;Do not veto if &amp;quot;primary&amp;quot; is the node trying to be elected&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-11032&quot;&gt;&lt;del&gt;SERVER-11032&lt;/del&gt;&lt;/a&gt;: Do not veto if primary is the node trying to be elected&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ddadab1bbd8739df2c2a91b5f88c254d7e14380d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ddadab1bbd8739df2c2a91b5f88c254d7e14380d&lt;/a&gt;&lt;/p&gt;</comment>
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