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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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<item>
            <title>[SERVER-25955] mongos cannot implicitly create the shard key index when featureCompatibilityVersion is 3.2</title>
                <link>https://jira.mongodb.org/browse/SERVER-25955</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25156&quot; title=&quot;Create index version V2&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25156&quot;&gt;&lt;del&gt;SERVER-25156&lt;/del&gt;&lt;/a&gt; is implemented, specifying the &quot;collation&quot; option in an index specification will require building a v=2 index. However, building a v=2 index is disallowed when the server&apos;s featureCompatibilityVersion is 3.2. We should allow mongos to still be able to implicitly create the shard key index on collections with a &quot;simple&quot; default collation &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.3.12/src/mongo/s/commands/cluster_shard_collection_cmd.cpp#L425-L429&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;by not passing {&lt;tt&gt;locale: &quot;simple&quot;&lt;/tt&gt;} to &lt;tt&gt;clusterCreateIndex()&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="313861">SERVER-25955</key>
            <summary>mongos cannot implicitly create the shard key index when featureCompatibilityVersion is 3.2</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="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="maria.vankeulen@mongodb.com">Maria van Keulen</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Fri, 2 Sep 2016 22:05:04 +0000</created>
                <updated>Sat, 19 Nov 2016 00:02:50 +0000</updated>
                            <resolved>Mon, 19 Sep 2016 14:19:06 +0000</resolved>
                                                    <fixVersion>3.4.0-rc0</fixVersion>
                                    <component>Querying</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1386797" author="xgen-internal-githook" created="Fri, 16 Sep 2016 22:14:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;mvankeulen94&apos;, u&apos;name&apos;: u&apos;Maria van Keulen&apos;, u&apos;email&apos;: u&apos;maria.vankeulen@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25955&quot; title=&quot;mongos cannot implicitly create the shard key index when featureCompatibilityVersion is 3.2&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25955&quot;&gt;&lt;del&gt;SERVER-25955&lt;/del&gt;&lt;/a&gt;: Only pass simple collation from mongos if necessary&lt;/p&gt;

&lt;p&gt;Fixes an issue that prevented mongos from implicitly creating a shard&lt;br/&gt;
key index on collections with no default collation when the server&apos;s&lt;br/&gt;
featureCompatibilityVersion is 3.2.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fd3a4434b891d863437354bf2130885a3a3325a8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fd3a4434b891d863437354bf2130885a3a3325a8&lt;/a&gt;&lt;/p&gt;</comment>
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