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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-62811] Allow special index types on cluster keys</title>
                <link>https://jira.mongodb.org/browse/SERVER-62811</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Investigate sharding_clustered_collections suite failure for collation_shard_targeting_hashed_shard_key.js&lt;/p&gt;

&lt;p&gt;It hits the invariant that&#160;&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/08aa07493315218bb47578ec77c94f2d728fb347/src/mongo/db/query/internal_plans.cpp#L80&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;disallows a collator&lt;/a&gt;&#160;from being specified for a clustered index scan&lt;/p&gt;</description>
                <environment></environment>
        <key id="1967733">SERVER-62811</key>
            <summary>Allow special index types on cluster keys</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="daniel.gomezferro@mongodb.com">Daniel Gomez Ferro</assignee>
                                    <reporter username="haley.connelly@mongodb.com">Haley Connelly</reporter>
                        <labels>
                    </labels>
                <created>Thu, 20 Jan 2022 19:49:34 +0000</created>
                <updated>Sun, 29 Oct 2023 21:43:53 +0000</updated>
                            <resolved>Wed, 2 Feb 2022 08:58:44 +0000</resolved>
                                                    <fixVersion>5.3.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4329636" author="xgen-internal-githook" created="Wed, 2 Feb 2022 08:47:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Daniel G&#243;mez Ferro&apos;, &apos;email&apos;: &apos;daniel.gomezferro@mongodb.com&apos;, &apos;username&apos;: &apos;dgomezferro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62811&quot; title=&quot;Allow special index types on cluster keys&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62811&quot;&gt;&lt;del&gt;SERVER-62811&lt;/del&gt;&lt;/a&gt; Allow special index types on cluster keys&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c7f5e389e4488fcf7bd7a9a2ca4149080c409242&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c7f5e389e4488fcf7bd7a9a2ca4149080c409242&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4305101" author="JIRAUSER1263153" created="Fri, 21 Jan 2022 10:07:07 +0000"  >&lt;p&gt;I think the problem is that we are creating a clustered collection with a collation and sharding it on &lt;tt&gt;_id&lt;/tt&gt;. Since sharding requires an index on the shard key with the &lt;tt&gt;simple&lt;/tt&gt; collation and it&apos;s currently not possible to create indexes on &lt;tt&gt;_id&lt;/tt&gt;, it shouldn&apos;t be possible to end up in this state. Could it be due to the way we are forcing all collections to be clustered (using a failpoint I guess)?&lt;/p&gt;</comment>
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