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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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-69134] Dropping a sharded collection doesn&apos;t get rid of the CSS entry</title>
                <link>https://jira.mongodb.org/browse/SERVER-69134</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, when a collection is dropped, we only &lt;a href=&quot;https://github.com/mongodb/mongo/blob/b99b5c3e242ff690b5127c5d672d226f7eaf5754/src/mongo/db/s/drop_collection_coordinator.cpp#L47-L68&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;clear the CSR&apos;s contents&lt;/a&gt;, but don&apos;t actually drop the CSS entry from the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1b12c649156f62b2816aae2d45fac4a35f90eb60/src/mongo/db/s/collection_sharding_state.cpp#L46&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;CSS map&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;With the recent changes to fix the range deleter preservation on Shard Primaries (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67385&quot; title=&quot;Range deletion tasks may be wrongly scheduled before ongoing queries on range finish on a shard primary&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67385&quot;&gt;&lt;del&gt;SERVER-67385&lt;/del&gt;&lt;/a&gt;), the clearing of the CSR doesn&apos;t actually throw out the contents of the MigrationManager (which really is a reference to the routing table). So in theory, we are leaving more memory behind than we were leaving before upon drop of a sharded collection.&lt;/p&gt;

&lt;p&gt;Under this ticket we should make the dropping of a collection to entirely throw out the CSS entry rather than just clear it.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2121935">SERVER-69134</key>
            <summary>Dropping a sharded collection doesn&apos;t get rid of the CSS entry</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="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</assignee>
                                    <reporter username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</reporter>
                        <labels>
                    </labels>
                <created>Thu, 25 Aug 2022 09:19:31 +0000</created>
                <updated>Sun, 29 Oct 2023 21:34:02 +0000</updated>
                            <resolved>Tue, 13 Sep 2022 12:29:07 +0000</resolved>
                                                    <fixVersion>6.1.1</fixVersion>
                    <fixVersion>5.0.14</fixVersion>
                    <fixVersion>6.0.3</fixVersion>
                    <fixVersion>6.2.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4900659" author="xgen-internal-githook" created="Thu, 13 Oct 2022 13:03:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sergi Mateo Bellido&apos;, &apos;email&apos;: &apos;sergi.mateo-bellido@mongodb.com&apos;, &apos;username&apos;: &apos;smateo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-69134&quot; title=&quot;Dropping a sharded collection doesn&amp;#39;t get rid of the CSS entry&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-69134&quot;&gt;&lt;del&gt;SERVER-69134&lt;/del&gt;&lt;/a&gt; Adding a way to clear the metadata manager&lt;/p&gt;

&lt;p&gt;(cherry picked from commit fa94f5fb6216a1cc1e23f5ad4df05295b380070e)&lt;br/&gt;
Branch: v6.1&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d6b251841c09766b1a2efef583151289f50b0a88&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d6b251841c09766b1a2efef583151289f50b0a88&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4900645" author="xgen-internal-githook" created="Thu, 13 Oct 2022 12:56:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sergi Mateo Bellido&apos;, &apos;email&apos;: &apos;sergi.mateo-bellido@mongodb.com&apos;, &apos;username&apos;: &apos;smateo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-69134&quot; title=&quot;Dropping a sharded collection doesn&amp;#39;t get rid of the CSS entry&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-69134&quot;&gt;&lt;del&gt;SERVER-69134&lt;/del&gt;&lt;/a&gt; Adding a way to clear the metadata manager&lt;/p&gt;

&lt;p&gt;(cherry picked from commit fa94f5fb6216a1cc1e23f5ad4df05295b380070e)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f923ca7045e26803e1fa9f355a802ad0d11adbcb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f923ca7045e26803e1fa9f355a802ad0d11adbcb&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4900630" author="xgen-internal-githook" created="Thu, 13 Oct 2022 12:51:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sergi Mateo Bellido&apos;, &apos;email&apos;: &apos;sergi.mateo-bellido@mongodb.com&apos;, &apos;username&apos;: &apos;smateo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-69134&quot; title=&quot;Dropping a sharded collection doesn&amp;#39;t get rid of the CSS entry&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-69134&quot;&gt;&lt;del&gt;SERVER-69134&lt;/del&gt;&lt;/a&gt; Adding a way to clear the metadata manager&lt;/p&gt;

&lt;p&gt;(cherry picked from commit fa94f5fb6216a1cc1e23f5ad4df05295b380070e)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/86e4ce0ac68e9b408aefdd531e46bdfda437b6f2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/86e4ce0ac68e9b408aefdd531e46bdfda437b6f2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4821904" author="xgen-internal-githook" created="Tue, 13 Sep 2022 12:10:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sergi Mateo Bellido&apos;, &apos;email&apos;: &apos;sergi.mateo-bellido@mongodb.com&apos;, &apos;username&apos;: &apos;smateo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-69134&quot; title=&quot;Dropping a sharded collection doesn&amp;#39;t get rid of the CSS entry&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-69134&quot;&gt;&lt;del&gt;SERVER-69134&lt;/del&gt;&lt;/a&gt; Adding a way to clear the metadata manager&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fa94f5fb6216a1cc1e23f5ad4df05295b380070e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fa94f5fb6216a1cc1e23f5ad4df05295b380070e&lt;/a&gt;&lt;/p&gt;</comment>
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