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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-72496] Investigate config.transactions collection and index validation</title>
                <link>https://jira.mongodb.org/browse/SERVER-72496</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When implementing validation for CSI, we found two collections which apparently do not update indexes when written to, namely:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;local.replset.oplogTruncateAfterPoint&lt;/li&gt;
	&lt;li&gt;config.transactions&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=geert.bosch%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;geert.bosch@mongodb.com&quot;&gt;geert.bosch@mongodb.com&lt;/a&gt; commented in a discussion with &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=charlie.swanson%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;charlie.swanson@mongodb.com&quot;&gt;charlie.swanson@mongodb.com&lt;/a&gt; that such behavior is not unexpected in local.replset.oplogTruncateAfterPoint , but we don&apos;t know for sure about config.transaction. We&apos;d like to get someone to confirm this.&lt;/p&gt;

&lt;p&gt;We have a failpoint which puts CSI on all collections for testing, but these two collections are exempt (via &lt;a href=&quot;https://github.com/10gen/mongo/blob/4c10ab8b17a9ba891360c81a55b8a89fec30a1fa/src/mongo/db/catalog/database_impl.cpp#L761-L766&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this helper function&lt;/a&gt;). We want to be sure that is the correct thing to do.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2223280">SERVER-72496</key>
            <summary>Investigate config.transactions collection and index validation</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="mohammad.dashti@mongodb.com">Mohammad Dashti</assignee>
                                    <reporter username="colin.stolley@mongodb.com">Colin Stolley</reporter>
                        <labels>
                            <label>pm2646-m4</label>
                    </labels>
                <created>Tue, 3 Jan 2023 22:57:02 +0000</created>
                <updated>Sun, 29 Oct 2023 21:28:42 +0000</updated>
                            <resolved>Tue, 17 Jan 2023 23:22:24 +0000</resolved>
                                                    <fixVersion>6.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5118866" author="xgen-internal-githook" created="Tue, 17 Jan 2023 20:39:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Mohammad Dashti&apos;, &apos;email&apos;: &apos;mdashti@gmail.com&apos;, &apos;username&apos;: &apos;mdashti&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72496&quot; title=&quot;Investigate config.transactions collection and index validation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72496&quot;&gt;&lt;del&gt;SERVER-72496&lt;/del&gt;&lt;/a&gt; No index should be created on the &apos;config.transactions&apos; collection&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/387c810241b6b9f5bb2d85580038cc05aabec88d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/387c810241b6b9f5bb2d85580038cc05aabec88d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5112506" author="geert.bosch" created="Fri, 13 Jan 2023 18:32:56 +0000"  >&lt;p&gt;Yes, don&apos;t try and create CSI indexes on these internal collections, it really doesn&apos;t make sense.&lt;/p&gt;</comment>
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