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    <title>MongoDB Jira</title>
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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-78232] Change Stream is not working with on-demand materialized views</title>
                <link>https://jira.mongodb.org/browse/SERVER-78232</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The same code works with a regular Mongo collection but doesn&apos;t catch any events happening to the on-demand materialized view.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;I found the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/jstests/change_streams/ban_from_views.js#L34&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;test&lt;/a&gt; which checks that the Change Stream is not supported for normal views.&lt;/p&gt;

&lt;p&gt;However, I didn&apos;t find any limitations/restrictions to using &lt;a href=&quot;https://www.mongodb.com/docs/manual/changeStreams/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Change Streams&lt;/a&gt; with &lt;a href=&quot;https://www.mongodb.com/docs/manual/core/materialized-views/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;on-demand materialized views.&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2372484">SERVER-78232</key>
            <summary>Change Stream is not working with on-demand materialized views</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="k.chaus@efg.gg">Kos Chaus</reporter>
                        <labels>
                    </labels>
                <created>Tue, 20 Jun 2023 13:54:28 +0000</created>
                <updated>Tue, 20 Jun 2023 17:40:22 +0000</updated>
                            <resolved>Tue, 20 Jun 2023 17:03:13 +0000</resolved>
                                    <version>5.0.7</version>
                                                                        <votes>0</votes>
                                    <watches>2</watches>
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	&lt;li&gt;Create collection C1&lt;/li&gt;
	&lt;li&gt;Create the on-demand materialized view MV1 on the C1 with all matched&lt;/li&gt;
	&lt;li&gt;Watch MV1&lt;/li&gt;
	&lt;li&gt;Insert something in C1&lt;/li&gt;
	&lt;li&gt;&#160;&lt;/li&gt;
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&lt;p&gt;&lt;b&gt;Expected&lt;/b&gt;:&lt;/p&gt;

&lt;p&gt;The change in MV1 is caught by the watcher&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Actual&lt;/b&gt;:&lt;/p&gt;

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