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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>[DOCS-10932] Need example of $lookup in sharded environment</title>
                <link>https://jira.mongodb.org/browse/DOCS-10932</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;Can we perform $lookup in a sharded environment. If yes, can you provide a example of using $lookup in a sharded environment. &lt;br/&gt;
The error that it shows&lt;br/&gt;
&quot;Collection cannot be sharded&quot;&lt;/p&gt;
</description>
                <environment>Ubuntu&lt;br/&gt;
&lt;br/&gt;
*Location*: &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/aggregation/lookup/#&quot;&gt;https://docs.mongodb.com/manual/reference/operator/aggregation/lookup/#&lt;/a&gt;&lt;br/&gt;
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        <key id="448958">DOCS-10932</key>
            <summary>Need example of $lookup in sharded environment</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="13202">Works as Designed</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="xgen-internal-docs">Docs Collector User</reporter>
                        <labels>
                            <label>aggregation-framework</label>
                            <label>collector-298ba4e7</label>
                    </labels>
                <created>Sat, 21 Oct 2017 12:00:43 +0000</created>
                <updated>Mon, 30 Oct 2023 22:22:59 +0000</updated>
                            <resolved>Thu, 26 Oct 2017 12:30:38 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1709892" author="stennie" created="Thu, 26 Oct 2017 12:30:38 +0000"  >&lt;p&gt;As per the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/aggregation/lookup/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;$lookup documentation&lt;/a&gt;, the &lt;tt&gt;from&lt;/tt&gt; collection must be unsharded so this error is expected:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;Performs a left outer join to an unsharded collection in the same database to filter in documents from the &#8220;joined&#8221; collection for processing.&lt;/p&gt;&lt;/blockquote&gt; 

&lt;p&gt;Regards,&lt;br/&gt;
Stennie&lt;/p&gt;</comment>
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