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            <title>[SERVER-62594] Allow cross-database renames to report the original namespace and UUID</title>
                <link>https://jira.mongodb.org/browse/SERVER-62594</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Cross-database collection renames currently work by writing all data from the original collection into a temp collection on the new database, renaming that collection to the target namespace, and then dropping the original collection. After PM-1950, change streams will report all these steps explicitly, allowing a client application to deduce what has happened.&lt;/p&gt;

&lt;p&gt;However, it might be preferable to instead hide the inserts into the temporary collection behind a &lt;tt&gt;fromMigrate&lt;/tt&gt; flag, and give change streams a way to simply report the final rename from the original namespace to the new namespace. This would require some changes to the oplog format, possibly by recording the namespace and uuid of the original collection in the &lt;tt&gt;o2&lt;/tt&gt; field of the final &lt;tt&gt;renameCollection&lt;/tt&gt; oplog entry.&lt;/p&gt;</description>
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        <key id="1963310">SERVER-62594</key>
            <summary>Allow cross-database renames to report the original namespace and UUID</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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>
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                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="bernard.gorman@mongodb.com">Bernard Gorman</reporter>
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                <created>Thu, 13 Jan 2022 14:59:54 +0000</created>
                <updated>Tue, 6 Dec 2022 00:40:18 +0000</updated>
                                                                                                <votes>0</votes>
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