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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-2609] Correct Documentation of Unique Indexs for Sharded Collections</title>
                <link>https://jira.mongodb.org/browse/DOCS-2609</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;footnote 1 makes it seem like we let you create a unique index on a sharded collection and just fail to enforce it. We don&apos;t. Creating new unique indexes will fail, and we refuse to shard collections with unique indexes on fields other than _id. The footnote as-is (and much of this page) only applies to the _id index.&lt;/p&gt;

&lt;p&gt;Also the Warning should probably be presented as a 3rd option: using guaranteed unique identifiers.&lt;/p&gt;</description>
                <environment>&lt;br/&gt;
&lt;br/&gt;
*Location*: &lt;a href=&quot;http://docs.mongodb.org/manual/tutorial/enforce-unique-keys-for-sharded-collections/&quot;&gt;http://docs.mongodb.org/manual/tutorial/enforce-unique-keys-for-sharded-collections/&lt;/a&gt;&lt;br/&gt;
*User-Agent*: Mozilla/5.0 (X11; Linux x86_64; rv:26.0) Gecko/20100101 Firefox/26.0&lt;br/&gt;
*Referrer*: &lt;a href=&quot;http://docs.mongodb.org/manual/reference/limits/&quot;&gt;http://docs.mongodb.org/manual/reference/limits/&lt;/a&gt;&lt;br/&gt;
*Screen Resolution*: 2560 x 1440&lt;br/&gt;
*repo*: docs&lt;br/&gt;
*source*: tutorial/enforce-unique-keys-for-sharded-collections&lt;br/&gt;
</environment>
        <key id="108007">DOCS-2609</key>
            <summary>Correct Documentation of Unique Indexs for Sharded Collections</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                            <label>collector-298ba4e7</label>
                    </labels>
                <created>Tue, 28 Jan 2014 18:40:54 +0000</created>
                <updated>Mon, 17 Mar 2014 20:01:42 +0000</updated>
                            <resolved>Fri, 21 Feb 2014 18:02:24 +0000</resolved>
                                                    <fixVersion>v1.3.1</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="517703" author="xgen-internal-githook" created="Mon, 17 Mar 2014 20:01:42 +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-2609&quot; title=&quot;Correct Documentation of Unique Indexs for Sharded Collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2609&quot;&gt;&lt;del&gt;DOCS-2609&lt;/del&gt;&lt;/a&gt;: updated odd cases mentioning 2.5.x&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/299852516ec14ad5f151c7c3823fb5d2a68b6c9b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/299852516ec14ad5f151c7c3823fb5d2a68b6c9b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="517702" author="xgen-internal-githook" created="Mon, 17 Mar 2014 20:01:40 +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-2609&quot; title=&quot;Correct Documentation of Unique Indexs for Sharded Collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2609&quot;&gt;&lt;del&gt;DOCS-2609&lt;/del&gt;&lt;/a&gt;: changed 2.5.x to 2.6 in directives:&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/119de9c84cb178c60c13b69774831d507be7e63a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/119de9c84cb178c60c13b69774831d507be7e63a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="503252" author="xgen-internal-githook" created="Fri, 21 Feb 2014 18:17:53 +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-2609&quot; title=&quot;Correct Documentation of Unique Indexs for Sharded Collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2609&quot;&gt;&lt;del&gt;DOCS-2609&lt;/del&gt;&lt;/a&gt;: edits to enforce uniqueness to clarify behavior&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/561a45f0a679ef32cd9af9cc4c875549c8200914&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/561a45f0a679ef32cd9af9cc4c875549c8200914&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="503238" author="xgen-internal-githook" created="Fri, 21 Feb 2014 18:02:12 +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-2609&quot; title=&quot;Correct Documentation of Unique Indexs for Sharded Collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2609&quot;&gt;&lt;del&gt;DOCS-2609&lt;/del&gt;&lt;/a&gt;: edits to enforce uniqueness to clarify behavior&lt;br/&gt;
Branch: v2.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/6dc447c3d275ea85a51c50e60bad1eaf77ea7b5e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/6dc447c3d275ea85a51c50e60bad1eaf77ea7b5e&lt;/a&gt;&lt;/p&gt;</comment>
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