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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[DOCS-13722] Investigate changes in SERVER-48083: Support rolling back a collMod oplog entry that modifies an index when using rollback via refetch</title>
                <link>https://jira.mongodb.org/browse/DOCS-13722</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;
&lt;p&gt;In &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48083&quot; title=&quot;Support rolling back a collMod oplog entry that modifies an index when using rollback via refetch&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48083&quot;&gt;&lt;del&gt;SERVER-48083&lt;/del&gt;&lt;/a&gt;, we decided not to add support for rolling back a collMod entry that modifies an index&apos;s hidden field when using rollback via refetch because rollback via refetch is only used when enableMajorityReadConcern is set to false. Not only is it unlikely that users will run into this in practice since modifying an index via collMod is an uncommon operation, but also &lt;a href=&quot;https://jira.mongodb.org/browse/PM-1769&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;support for enableMajorityReadConcern=false may be removed in 4.6&lt;/a&gt;. That said, the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/configuration-options/#replication.enableMajorityReadConcern&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;documentation for enableMajorityReadConcern=false&lt;/a&gt; should be updated to reflect that collMod entries which modify an index cannot be be rolled back and any affected nodes will require a full resync.&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
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                <environment></environment>
        <key id="1385713">DOCS-13722</key>
            <summary>Investigate changes in SERVER-48083: Support rolling back a collMod oplog entry that modifies an index when using rollback via refetch</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="13201">Fixed</resolution>
                                        <assignee username="jeffrey.allen@mongodb.com">Jeffrey Allen</assignee>
                                    <reporter username="mihai.andrei@mongodb.com">Mihai Andrei</reporter>
                        <labels>
                            <label>docs-indexes</label>
                    </labels>
                <created>Mon, 22 Jun 2020 13:17:46 +0000</created>
                <updated>Mon, 30 Oct 2023 20:20:57 +0000</updated>
                            <resolved>Wed, 8 Jul 2020 18:47:12 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3275788" author="xgen-internal-githook" created="Wed, 8 Jul 2020 18:47:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jeff-allen-mongo&apos;, &apos;email&apos;: &apos;jeffrey.allen@10gen.com&apos;, &apos;username&apos;: &apos;jeff-allen-mongo&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13722&quot; title=&quot;Investigate changes in SERVER-48083: Support rolling back a collMod oplog entry that modifies an index when using rollback via refetch&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13722&quot;&gt;&lt;del&gt;DOCS-13722&lt;/del&gt;&lt;/a&gt;): collMod entries which modify an index cannot be be rolled back&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/4cba7555ad8c807ee020858cbe7e23ee420d2d81&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/4cba7555ad8c807ee020858cbe7e23ee420d2d81&lt;/a&gt;&lt;/p&gt;</comment>
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