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    <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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            <title>[SERVER-84637] moveCollection should be able to move a collection with unique indexes on unsplittable collections</title>
                <link>https://jira.mongodb.org/browse/SERVER-84637</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Unsplittable collections by definition are tracked collections with only one chunk. The internal representation in &lt;tt&gt;config.collections&lt;/tt&gt; requires a &apos;shard key&apos;, however, considering that in order to shard it the &lt;tt&gt;shardCollection&lt;/tt&gt; command must be called, they can be treated as collections with all the data on the same shard, so, any unique index created for the collection, can be preserved even if the collection is moved. This means that the uniqueness constraint validation executed by &lt;a href=&quot;https://github.com/10gen/mongo/blob/e936f74d4ccd4fa6df94344db0744f34e7704f6a/src/mongo/db/s/resharding/resharding_recipient_service.cpp#L719-L726&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;resharding&lt;/a&gt; (which is the machinery used by &lt;tt&gt;moveCollection&lt;/tt&gt;) it should not apply for unsplittable collections.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2539695">SERVER-84637</key>
            <summary>moveCollection should be able to move a collection with unique indexes on unsplittable collections</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="12452" iconUrl="https://jira.mongodb.org/images/icons/statuses/generic.png" description="">Needs Scheduling</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="kshitij.gupta@mongodb.com">Kshitij Gupta</assignee>
                                    <reporter username="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</reporter>
                        <labels>
                            <label>cs-subteam2</label>
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                <created>Mon, 8 Jan 2024 19:04:32 +0000</created>
                <updated>Fri, 2 Feb 2024 11:12:00 +0000</updated>
                                                            <fixVersion>8.0 Required</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                        <attachments>
                            <attachment id="501513" name="move_collection_on_unsplittable_collection_with_unique_index.js" size="801" author="marcos.grillo@mongodb.com" created="Mon, 8 Jan 2024 19:03:55 +0000"/>
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