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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>[SERVER-64142] Add new enforceUniqueness to refineCollectionShardKey command</title>
                <link>https://jira.mongodb.org/browse/SERVER-64142</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;(Analogous to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-63732&quot; title=&quot;Add new implicitlyCreateIndex and enforceUniquenessCheck to shardCollection command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-63732&quot;&gt;&lt;del&gt;SERVER-63732&lt;/del&gt;&lt;/a&gt; but for the refineCollectionShardKey command. An implicitlyCreateIndex parameter isn&apos;t relevant for refineCollectionShardKey because the command won&apos;t attempt to create an index even when the collection is empty.)&lt;/p&gt;

&lt;p&gt;enforceUniqueness defaults to true and when set to false, ignores uniqueness property when validating indexes for refineCollectionShardKey.&lt;/p&gt;

&lt;p&gt;Regardless of both settings, refineCollectionShardKey should still return an error if there are no index that is compatible with the new shard key pattern.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1993535">SERVER-64142</key>
            <summary>Add new enforceUniqueness to refineCollectionShardKey command</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="randolph@mongodb.com">Randolph Tan</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>sharding-nyc-subteam1</label>
                    </labels>
                <created>Wed, 2 Mar 2022 23:45:20 +0000</created>
                <updated>Sun, 29 Oct 2023 21:41:43 +0000</updated>
                            <resolved>Mon, 28 Mar 2022 17:51:00 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                    <fixVersion>4.4.17</fixVersion>
                    <fixVersion>5.0.12</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4777321" author="xgen-internal-githook" created="Thu, 25 Aug 2022 17:51:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Randolph Tan&apos;, &apos;email&apos;: &apos;randolph@10gen.com&apos;, &apos;username&apos;: &apos;renctan&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64142&quot; title=&quot;Add new enforceUniqueness to refineCollectionShardKey command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64142&quot;&gt;&lt;del&gt;SERVER-64142&lt;/del&gt;&lt;/a&gt; Add new enforceUniqueness to refineCollectionShardKey command&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 22964e1ae4dfe67e4d5e20520e6d91c9c58c105c)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dcf72568d8355d4326af801d32b86521a2144ae7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dcf72568d8355d4326af801d32b86521a2144ae7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4771684" author="xgen-internal-githook" created="Tue, 23 Aug 2022 20:38:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Randolph Tan&apos;, &apos;email&apos;: &apos;randolph@10gen.com&apos;, &apos;username&apos;: &apos;renctan&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64142&quot; title=&quot;Add new enforceUniqueness to refineCollectionShardKey command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64142&quot;&gt;&lt;del&gt;SERVER-64142&lt;/del&gt;&lt;/a&gt; Add new enforceUniqueness to refineCollectionShardKey command&lt;/p&gt;

&lt;p&gt;(cherry picked from commit b355fd53d1b13d217e32061c92d5ca902d6209c3)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/22964e1ae4dfe67e4d5e20520e6d91c9c58c105c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/22964e1ae4dfe67e4d5e20520e6d91c9c58c105c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4439283" author="xgen-internal-githook" created="Mon, 28 Mar 2022 17:17:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Randolph Tan&apos;, &apos;email&apos;: &apos;randolph@10gen.com&apos;, &apos;username&apos;: &apos;renctan&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64142&quot; title=&quot;Add new enforceUniqueness to refineCollectionShardKey command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64142&quot;&gt;&lt;del&gt;SERVER-64142&lt;/del&gt;&lt;/a&gt; Add new enforceUniqueness to refineCollectionShardKey command&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b355fd53d1b13d217e32061c92d5ca902d6209c3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b355fd53d1b13d217e32061c92d5ca902d6209c3&lt;/a&gt;&lt;/p&gt;</comment>
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                            <customfieldvalue>Added 2 new fields to the refineShardKey command:&lt;br/&gt;
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;enforceUniquenessCheck: Controls whether this command verifies that any unique indexes are prefixed by the new shard key pattern if unique is true. If true then it will verify and if false then it won&amp;#39;t. Defaults to true.&lt;br/&gt;
&lt;br/&gt;
Not strictly required to be in 6.0 docs, but eventually in the docs. These new fields are mostly for use by cluster to cluster replication and documentation is mostly for other mongo engineers. Not sure if there&amp;#39;s a better place to put it aside from the docs.</customfieldvalue>

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