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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>[DOCS-2535] Document problems with unique/dropDups indexes in the rolling index build</title>
                <link>https://jira.mongodb.org/browse/DOCS-2535</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;There are a number of potential issues that can occur if creating a unique index with dropDups on a collection in a rolling fashion in a replica set as documented in &lt;a href=&quot;http://docs.mongodb.org/manual/tutorial/build-indexes-on-replica-sets/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/tutorial/build-indexes-on-replica-sets/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;We should document that this is not a good way to build a unique index and also document our suggestions for a unique index with dropDups on a replica set.&lt;/p&gt;</description>
                <environment></environment>
        <key id="106136">DOCS-2535</key>
            <summary>Document problems with unique/dropDups indexes in the rolling index build</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="sam.kleinman">Sam Kleinman</assignee>
                                    <reporter username="david.hows">David Hows</reporter>
                        <labels>
                    </labels>
                <created>Wed, 15 Jan 2014 04:54:47 +0000</created>
                <updated>Tue, 17 Feb 2015 21:34:47 +0000</updated>
                            <resolved>Mon, 27 Jan 2014 22:41:21 +0000</resolved>
                                                    <fixVersion>v1.3.0</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="485841" author="xgen-internal-githook" created="Wed, 22 Jan 2014 18:50:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tychoish&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-2535&quot; title=&quot;Document problems with unique/dropDups indexes in the rolling index build&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2535&quot;&gt;&lt;del&gt;DOCS-2535&lt;/del&gt;&lt;/a&gt;: edits to index building document to admonish an antipattern&lt;br/&gt;
Branch: v2.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/9306ae46ff1367988f665959a5fa55de2e9cb662&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/9306ae46ff1367988f665959a5fa55de2e9cb662&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="485836" author="xgen-internal-githook" created="Wed, 22 Jan 2014 18:50:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tychoish&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-2535&quot; title=&quot;Document problems with unique/dropDups indexes in the rolling index build&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2535&quot;&gt;&lt;del&gt;DOCS-2535&lt;/del&gt;&lt;/a&gt;: edits to index building document to admonish an antipattern&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/68d93aa9a403fbf1e40463de6a0dbb4f30210bac&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/68d93aa9a403fbf1e40463de6a0dbb4f30210bac&lt;/a&gt;&lt;/p&gt;</comment>
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