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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-24031] Prevent cleanupOrphan from deleting migrating chunk data before commit</title>
                <link>https://jira.mongodb.org/browse/SERVER-24031</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;cleanupOrphaned can be called between&lt;br/&gt;
MigrationSourceManager::enterCriticalSection and&lt;br/&gt;
MigrationSourceManager::commitDonateChunk. The _uncommittedMetadata variable is create and saved in MigrationSourceManager::enterCriticalSection, but the actual commit doesn&apos;t happen until MigrationSourceManager::commitDonateChunk is finished. cleanupOrphaned can sneak in between and use the _uncommittedMetadata saved state to decide the not yet committed chunk &amp;#8211; which can still fail to be committed, thus we end up keeping the chunk data &amp;#8211; is gone and then delete all the data.&lt;/p&gt;

&lt;p&gt;The master fix is going in as a result of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-22659&quot; title=&quot;Implement commitChunkMigration command on the config server&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-22659&quot;&gt;&lt;del&gt;SERVER-22659&lt;/del&gt;&lt;/a&gt; &amp;#8211; the commit to remove the _uncommittedMetadata variable. It needs to be backported, and modified if necessary.&lt;/p&gt;</description>
                <environment></environment>
        <key id="284114">SERVER-24031</key>
            <summary>Prevent cleanupOrphan from deleting migrating chunk data before commit</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="9">Done</resolution>
                                        <assignee username="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                            <label>code-and-test</label>
                    </labels>
                <created>Tue, 3 May 2016 17:24:22 +0000</created>
                <updated>Wed, 5 Apr 2017 15:22:04 +0000</updated>
                            <resolved>Tue, 21 Jun 2016 19:26:08 +0000</resolved>
                                                    <fixVersion>3.2.8</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1301751" author="xgen-internal-githook" created="Tue, 21 Jun 2016 19:25:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;DiannaHohensee&apos;, u&apos;name&apos;: u&apos;Dianna Hohensee&apos;, u&apos;email&apos;: u&apos;dianna.hohensee@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24031&quot; title=&quot;Prevent cleanupOrphan from deleting migrating chunk data before commit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24031&quot;&gt;&lt;del&gt;SERVER-24031&lt;/del&gt;&lt;/a&gt; Prevent cleanupOrphaned from starting if a migration is running.&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dfe69f949be0e1aa83efcaaea07cc0c4639677bf&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dfe69f949be0e1aa83efcaaea07cc0c4639677bf&lt;/a&gt;&lt;/p&gt;</comment>
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