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    <title>MongoDB Jira</title>
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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>[DOCS-11949] Docs for SERVER-34489: Enable new format Unique Index via FCV</title>
                <link>https://jira.mongodb.org/browse/DOCS-11949</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;----------------------------&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;OriginalDescription&quot;&gt;&lt;/a&gt;Original Description&lt;/h2&gt;

&lt;blockquote&gt;
&lt;h3&gt;&lt;a name=&quot;Description%3A&quot;&gt;&lt;/a&gt;Description: &lt;/h3&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-11933&quot; title=&quot;4.2 Downgrade consideration: Unique Index&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-11933&quot;&gt;&lt;del&gt;DOCS-11933&lt;/del&gt;&lt;/a&gt; deals with the documentation changes required by this work.&lt;/p&gt;

&lt;h3&gt;&lt;a name=&quot;EngineeringTicketDescription%3A&quot;&gt;&lt;/a&gt;Engineering Ticket Description:&lt;/h3&gt;

&lt;p&gt;New format unique indexes would be initially gated by a variable. Start using FCV to enable or disable new format unique indexes:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Plug-in new format indexes into upgrade/downgrade infratructure.&lt;/li&gt;
	&lt;li&gt;Setting FCV=4.2 will cause all exisinting unique indexes to be updated to new format. The content of indexes will not change. New entries will be in new format.&lt;/li&gt;
	&lt;li&gt;With FCV=4.0, existing new format index will remain in this format. Any new unique indexes will be created in old V2 format.&lt;/li&gt;
	&lt;li&gt;Enhance multiVersion test for collectionsPendingDrop.&lt;/li&gt;
&lt;/ul&gt;
&lt;/blockquote&gt;
&lt;p&gt;----------------------------&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges%28filesthatneedworkandhowmuch%29&quot;&gt;&lt;/a&gt;Scope of changes (files that need work and how much)&lt;/h2&gt;

&lt;p&gt;4.2-compat&lt;br/&gt;
4.2-downgrade&lt;br/&gt;
unique-index&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;Impacttootherdocsoutsideofthisproduct&quot;&gt;&lt;/a&gt;Impact to other docs outside of this product&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28workanddate%3F%29&quot;&gt;&lt;/a&gt;MVP (work and date?)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28e.g.ScopeDocs%2CInvision%29&quot;&gt;&lt;/a&gt;Resources (e.g. Scope Docs, Invision)&lt;/h2&gt;</description>
                <environment></environment>
        <key id="585001">DOCS-11949</key>
            <summary>Docs for SERVER-34489: Enable new format Unique Index via FCV</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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="kay.kim@mongodb.com">Kay Kim</reporter>
                        <labels>
                            <label>nonnyc</label>
                            <label>storage-engines</label>
                    </labels>
                <created>Tue, 7 Aug 2018 16:31:37 +0000</created>
                <updated>Mon, 13 Nov 2023 18:33:14 +0000</updated>
                            <resolved>Thu, 25 Oct 2018 22:35:22 +0000</resolved>
                                                    <fixVersion>4.1.2</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2042792" author="xgen-internal-githook" created="Thu, 25 Oct 2018 22:34:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;kay&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;, &apos;username&apos;: &apos;kay-kim&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-11949&quot; title=&quot;Docs for SERVER-34489: Enable new format Unique Index via FCV&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-11949&quot;&gt;&lt;del&gt;DOCS-11949&lt;/del&gt;&lt;/a&gt;: 4.2 unique index internal format&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/607d4e6435b6eeec06e34c37d636922a4cb03336&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/607d4e6435b6eeec06e34c37d636922a4cb03336&lt;/a&gt;&lt;/p&gt;</comment>
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