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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-51347] Allow writes on a collection string-matching &quot;.system.resharding.&quot; for Resharding</title>
                <link>https://jira.mongodb.org/browse/SERVER-51347</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;As of now, inserts are disallowed on &lt;a href=&quot;https://github.com/mongodb/mongo/blob/9cc6fab62d3c66d5ed3517271f6e0fdfa62cd27b/src/mongo/db/ops/insert.cpp#L219-L228&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a collection with &quot;.system&quot; in the collection name&lt;/a&gt;. A current exception is &lt;tt&gt;config.cache.chunks.config.system.sessions&lt;/tt&gt;, since that collection must be writable as part of the replicated chunk metadata collection. We must also allow the resharding temporary collection&apos;s chunk metadata collection to be modified. The temporary resharding collection follows this pattern:&lt;/p&gt;

&lt;p&gt;For a db &amp;lt;db&amp;gt; and a collection with UUID &amp;lt;uuid&amp;gt;,&lt;/p&gt;

&lt;p&gt;&lt;tt&gt;&amp;lt;db&amp;gt;.system.resharding.&amp;lt;uuid&amp;gt;&lt;/tt&gt;&lt;/p&gt;

&lt;p&gt;and the chunk metadata collection would be:&lt;/p&gt;

&lt;p&gt;&lt;tt&gt;config.cache.chunks.&amp;lt;db&amp;gt;.system.resharding.&amp;lt;uuid&amp;gt;&lt;/tt&gt;&lt;/p&gt;

&lt;p&gt;So to capture both collections and to avoid being more permissive than the current collection name restrictions with regards to other collections matching &quot;.system.&quot;, we should follow roughly this code:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;}&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
</description>
                <environment></environment>
        <key id="1501808">SERVER-51347</key>
            <summary>Allow writes on a collection string-matching &quot;.system.resharding.&quot; for Resharding</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="alex.taskov@mongodb.com">Alexander Taskov</assignee>
                                    <reporter username="blake.oler@mongodb.com">Blake Oler</reporter>
                        <labels>
                            <label>PM-234-M1</label>
                            <label>PM-234-T-lifecycle</label>
                    </labels>
                <created>Mon, 5 Oct 2020 13:46:35 +0000</created>
                <updated>Sun, 29 Oct 2023 22:02:24 +0000</updated>
                            <resolved>Thu, 8 Oct 2020 11:52:57 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3433785" author="xgen-internal-githook" created="Thu, 8 Oct 2020 07:40:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Alex Taskov&apos;, &apos;email&apos;: &apos;alex.taskov@mongodb.com&apos;, &apos;username&apos;: &apos;alextaskov&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-51347&quot; title=&quot;Allow writes on a collection string-matching &amp;quot;.system.resharding.&amp;quot; for Resharding&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-51347&quot;&gt;&lt;del&gt;SERVER-51347&lt;/del&gt;&lt;/a&gt; Allow writes on a collection string-matching &apos;.system.resharding.&apos; for Resharding&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1f11a9c73e11ebb6a89b1600a0a03741111c48bc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1f11a9c73e11ebb6a89b1600a0a03741111c48bc&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1494823">SERVER-51209</issuekey>
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            <issuekey id="1494876">SERVER-51210</issuekey>
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