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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-31416] Ban $changeStream stage in $lookup pipeline</title>
                <link>https://jira.mongodb.org/browse/SERVER-31416</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;tt&gt;$changeStream&lt;/tt&gt; stage should not be allowed inside a &lt;tt&gt;$lookup&lt;/tt&gt; pipeline, since there is no way to get &quot;all&quot; results from a tailable cursor. Also, while we do not currently allow the user to specify a pipeline for &lt;tt&gt;$graphLookup&lt;/tt&gt;, and &lt;tt&gt;$changeStream&lt;/tt&gt; is banned in views, we should look ahead to ensuring &lt;tt&gt;$changeStream&lt;/tt&gt; is not allowed in a &lt;tt&gt;$graphLookup&lt;/tt&gt; pipeline if we allow users to specify &lt;tt&gt;$graphLookup&lt;/tt&gt; pipelines in the future.&lt;/p&gt;</description>
                <environment></environment>
        <key id="441256">SERVER-31416</key>
            <summary>Ban $changeStream stage in $lookup pipeline</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="bernard.gorman@mongodb.com">Bernard Gorman</assignee>
                                    <reporter username="tess.avitabile@mongodb.com">Tess Avitabile</reporter>
                        <labels>
                    </labels>
                <created>Thu, 5 Oct 2017 18:10:18 +0000</created>
                <updated>Mon, 30 Oct 2023 23:13:03 +0000</updated>
                            <resolved>Tue, 10 Oct 2017 14:18:53 +0000</resolved>
                                                    <fixVersion>3.6.0-rc0</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1694495" author="xgen-internal-githook" created="Tue, 10 Oct 2017 14:16:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;name&apos;: &apos;Bernard Gorman&apos;, &apos;username&apos;: &apos;gormanb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31416&quot; title=&quot;Ban $changeStream stage in $lookup pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31416&quot;&gt;&lt;del&gt;SERVER-31416&lt;/del&gt;&lt;/a&gt; Ban $changeStream from $lookup pipelines&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/125fa84f4a6ee5faabae5529d6a6c05816c7050b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/125fa84f4a6ee5faabae5529d6a6c05816c7050b&lt;/a&gt;&lt;/p&gt;</comment>
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