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    <description>This file is an XML representation of an issue</description>
    <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-54478] Recipient primary failover after forget migration can lead to the oplog buffer collection not being dropped on new primary</title>
                <link>https://jira.mongodb.org/browse/SERVER-54478</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Start a tenant migration, with a two node recipient replica set. After the migration has completed, issue a forgetMigration command, and step down the recipient primary after it has marked the state doc as garbage collectable but before it has dropped the oplog, basically around &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d99a1169d585e0ad71d6c03a2dfacc2d019f9a0/src/mongo/db/repl/tenant_migration_recipient_service.cpp#L1607&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The new recipient primary &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d99a1169d585e0ad71d6c03a2dfacc2d019f9a0/src/mongo/db/repl/tenant_migration_recipient_service.cpp#L1380&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;will notice that the document is already marked as garbage collectable&lt;/a&gt;, and will jump to the first onCompletion block. &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d99a1169d585e0ad71d6c03a2dfacc2d019f9a0/src/mongo/db/repl/tenant_migration_recipient_service.cpp#L1252&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;This block will call _cleanupOnDataSyncCompletion and fulfill the _stateDocPersistedPromise with the error status&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Then, it will proceed to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d99a1169d585e0ad71d6c03a2dfacc2d019f9a0/src/mongo/db/repl/tenant_migration_recipient_service.cpp#L1605&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;_markStateDocumentAsGarbageCollectable&lt;/a&gt;, and then throw &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2d99a1169d585e0ad71d6c03a2dfacc2d019f9a0/src/mongo/db/repl/tenant_migration_recipient_service.cpp#L1101&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;, stating that the document has already been marked (the promise was fulfilled with the error status earlier). Thus, the remaining portion of the chain will be skipped, and the new primary will end up NOT dropping the oplog buffer collection.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1620946">SERVER-54478</key>
            <summary>Recipient primary failover after forget migration can lead to the oplog buffer collection not being dropped on new primary</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="13201">Fixed</resolution>
                                        <assignee username="vishnu.kaushik@mongodb.com">Vishnu Kaushik</assignee>
                                    <reporter username="vishnu.kaushik@mongodb.com">Vishnu Kaushik</reporter>
                        <labels>
                            <label>pm-1791_milestone-B</label>
                    </labels>
                <created>Thu, 11 Feb 2021 20:47:29 +0000</created>
                <updated>Sun, 29 Oct 2023 21:57:38 +0000</updated>
                            <resolved>Tue, 16 Feb 2021 16:44:51 +0000</resolved>
                                                    <fixVersion>5.0.0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3617355" author="xgen-internal-githook" created="Tue, 16 Feb 2021 16:24:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Vishnu Kaushik&apos;, &apos;email&apos;: &apos;vishnu.kaushik@mongodb.com&apos;, &apos;username&apos;: &apos;kauboy26&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-54478&quot; title=&quot;Recipient primary failover after forget migration can lead to the oplog buffer collection not being dropped on new primary&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-54478&quot;&gt;&lt;del&gt;SERVER-54478&lt;/del&gt;&lt;/a&gt; Fix issue where recipient primary failover after forget migration can lead to the oplog buffer collection not being dropped on new primary&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/09c474af1cca7c54d3f93ac46d8fbe9549cd4689&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/09c474af1cca7c54d3f93ac46d8fbe9549cd4689&lt;/a&gt;&lt;/p&gt;</comment>
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