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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-55115] Delete config.collections entry before deleting config.chunks on new DDL paths</title>
                <link>https://jira.mongodb.org/browse/SERVER-55115</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Deleting the config.collections entry before the config.chunks entries ensures that a CatalogCache refresh won&apos;t see partial chunks.&lt;/p&gt;

&lt;p&gt;In particular, if we don&apos;t do this we may trip &lt;a href=&quot;https://github.com/mongodb/mongo/blob/bfbe088aabd4716348eb17602f669613f9ce6b45/src/mongo/s/catalog_cache.cpp#L697-L704&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this invariant&lt;/a&gt; . The CatalogCache refresh could see that the allowMigrations field in config.collections was changed, but &lt;a href=&quot;https://github.com/mongodb/mongo/blob/bfbe088aabd4716348eb17602f669613f9ce6b45/src/mongo/db/s/config/sharding_catalog_manager_chunk_operations.cpp#L1470-L1493&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the chunk that was bumped along&lt;/a&gt; with it may be already deleted by the dropCollection, so the CatalogCache doesn&apos;t see a new version.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1645643">SERVER-55115</key>
            <summary>Delete config.collections entry before deleting config.chunks on new DDL paths</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="13201">Fixed</resolution>
                                        <assignee username="jordi.serra-torrens@mongodb.com">Jordi Serra Torrens</assignee>
                                    <reporter username="jordi.serra-torrens@mongodb.com">Jordi Serra Torrens</reporter>
                        <labels>
                            <label>PM-1965-Milestone-1</label>
                            <label>sharding-csrs-stepdown-also</label>
                    </labels>
                <created>Wed, 10 Mar 2021 13:17:36 +0000</created>
                <updated>Sun, 29 Oct 2023 21:56:26 +0000</updated>
                            <resolved>Wed, 10 Mar 2021 15:30:06 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3656907" author="xgen-internal-githook" created="Wed, 10 Mar 2021 15:21:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Serra Torrens&apos;, &apos;email&apos;: &apos;jordi.serra-torrens@mongodb.com&apos;, &apos;username&apos;: &apos;jordist&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55115&quot; title=&quot;Delete config.collections entry before deleting config.chunks on new DDL paths&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55115&quot;&gt;&lt;del&gt;SERVER-55115&lt;/del&gt;&lt;/a&gt;: Delete config.collections entry before deleting config.chunks on new DDL paths&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3d3a8cb06e9103e7269938331daf513e9cdb4c33&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3d3a8cb06e9103e7269938331daf513e9cdb4c33&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2081082">SERVER-67730</issuekey>
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