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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-32618] Implement _configsvrRenameCollection</title>
                <link>https://jira.mongodb.org/browse/SERVER-32618</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Changes to renameCollection are limited to what is necessary to remain on parity with 3.6, which is:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;only support renaming unsharded collections&lt;/li&gt;
	&lt;li&gt;if the rename reports failure, the collection data must be reachable through mongos under either the original name or new name&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;_configsvrRenameCollection logic&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;ScopedDistLock dbLock(dbName)&lt;/li&gt;
	&lt;li&gt;ScopedDistLock originalCollLock(originalCollName)&lt;/li&gt;
	&lt;li&gt;ScopedDistLock newCollLock(newCollName)&lt;/li&gt;
	&lt;li&gt;Insert an entry into config.collections with the new name; all other fields copied from the entry for the original name&lt;/li&gt;
	&lt;li&gt;Insert an entry into config.chunks with the new name; all other fields copied from the (single, since we&#8217;re only supporting renaming unsharded) chunk for the original name&lt;/li&gt;
	&lt;li&gt;Send renameCollection to the shard that owns the (only) chunk&lt;/li&gt;
	&lt;li&gt;Remove the original name&#8217;s entry from config.chunks&lt;/li&gt;
	&lt;li&gt;Remove the original name&#8217;s entry for config.collections&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Note that if the rename fails before step 6, the collection data is reachable under the original name somewhere in step 6, it&#8217;s reachable under either the original or new name after step 6, it&#8217;s reachable under the new name which satisfies our requirement that the collection data remains reachable, no matter where the rename fails.&lt;/p&gt;</description>
                <environment></environment>
        <key id="480784">SERVER-32618</key>
            <summary>Implement _configsvrRenameCollection</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="13203">Gone away</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="randolph@mongodb.com">Randolph Tan</reporter>
                        <labels>
                            <label>max-triage</label>
                            <label>pm-1051-legacy-tickets</label>
                    </labels>
                <created>Tue, 9 Jan 2018 22:44:21 +0000</created>
                <updated>Fri, 27 Oct 2023 20:43:43 +0000</updated>
                            <resolved>Thu, 4 Nov 2021 08:19:34 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4168776" author="kaloian.manassiev" created="Thu, 4 Nov 2021 08:19:34 +0000"  >&lt;p&gt;Gone away as of 5.0 with the changes to implement sharded rename collection.&lt;/p&gt;</comment>
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