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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-53478] Rename collection with dropTarget does not produce a drop changestream event</title>
                <link>https://jira.mongodb.org/browse/SERVER-53478</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When opening a changestream on collection X&lt;/p&gt;

&lt;p&gt;and running &lt;tt&gt;db.Y.renameCollection(&quot;X&quot;, dropTarget=true)&lt;/tt&gt;&lt;/p&gt;

&lt;p&gt;a rename changestream event is created from Y to X, however there is no explicit drop event associated with collection X.&lt;/p&gt;

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

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1576258">SERVER-53478</key>
            <summary>Rename collection with dropTarget does not produce a drop changestream event</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="oren.ovadia@mongodb.com">Oren Ovadia</reporter>
                        <labels>
                            <label>pm1950-m1</label>
                    </labels>
                <created>Tue, 22 Dec 2020 17:55:17 +0000</created>
                <updated>Tue, 6 Dec 2022 01:41:01 +0000</updated>
                                            <version>4.2.11</version>
                                                    <component>Change streams</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4368459" author="bernard.gorman" created="Tue, 22 Feb 2022 15:27:56 +0000"  >&lt;p&gt;As of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61889&quot; title=&quot;Enrich existing change stream events&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61889&quot;&gt;&lt;del&gt;SERVER-61889&lt;/del&gt;&lt;/a&gt;, opening a change stream with {&lt;tt&gt;showExpandedEvents: true&lt;/tt&gt;} will add a new field &lt;tt&gt;operationDescription&lt;/tt&gt; to the rename event. If the rename caused a collection to be dropped, this will have a field &lt;tt&gt;dropTarget&lt;/tt&gt; whose value is the UUID of the dropped collection, as well as a &lt;tt&gt;to&lt;/tt&gt; field describing the namespace of the dropped collection.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=oren.ovadia&quot; class=&quot;user-hover&quot; rel=&quot;oren.ovadia&quot;&gt;oren.ovadia&lt;/a&gt;, since in your example the change stream on collection &lt;tt&gt;X&lt;/tt&gt; will receive the &lt;tt&gt;rename&lt;/tt&gt; event which now contains explicit notification that collection &lt;tt&gt;X&lt;/tt&gt; was dropped during the rename, is this sufficient for your use-case?&lt;/p&gt;</comment>
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