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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-63749] Put view validation logic on applyOps direct writes to &lt;db&gt;.system.views</title>
                <link>https://jira.mongodb.org/browse/SERVER-63749</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The goal here is to move towards removing the internal view catalog logic where we support having invalid views. Regular user writes to &amp;lt;db&amp;gt;.system.views collections is supposed to no longer be allowed re&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43633&quot; title=&quot;Prohibit user writes to system.views&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43633&quot;&gt;&lt;del&gt;SERVER-43633&lt;/del&gt;&lt;/a&gt;. However, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/76a0ce52fff67f70fb169b96bb2e86e61cfad594/jstests/core/views/duplicate_ns.js#L25-L35&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;applyOps appears to be a loophole&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I believe the idea is that downstream teams want to take oplog entries and directly apply them to mongod servers via applyOps. So perhaps there&apos;s a way we can add validation logic here, where primaries at least can error &#8211; some investigation of how downstream teams use applyOps is necessary, to determine what we must support versus can prevent. &lt;b&gt;Update&lt;/b&gt;: Max thinks &lt;a href=&quot;https://github.com/10gen/mongomirror/blob/21096911441cf418f003d223c8075cf7d0e80963/mongomirror/ops_applier.go#L242&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongomirror might not use applyOps for views after all&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1985028">SERVER-63749</key>
            <summary>Put view validation logic on applyOps direct writes to &lt;db&gt;.system.views</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-catalog-and-routing">Backlog - Catalog and Routing</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                            <label>catalog</label>
                            <label>oldstorexemea</label>
                    </labels>
                <created>Wed, 16 Feb 2022 20:34:12 +0000</created>
                <updated>Thu, 26 Oct 2023 08:10:28 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4359920" author="dianna.hohensee" created="Wed, 16 Feb 2022 20:35:48 +0000"  >&lt;p&gt;Some follow up work to this would be to add a version upgrade step at some point to ensure all existing view entries are valid. With that, I think we can get rid of the invalid view catalog handling in our code.&lt;/p&gt;</comment>
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