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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>
    </build-info>


<item>
            <title>[SERVER-62006] Support majority read for _mdb_catalog</title>
                <link>https://jira.mongodb.org/browse/SERVER-62006</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In C2C replication, we would like to only replicate majority committed data so that we can avoid handling rollbacks of the source cluster. This is now done by using majority readConcern in collection scans in the cloning phase. However, listDatabases/listCollections/listIndexes don&apos;t support reading majority committed catalog as the catalog is not versioned. This makes it very hard for an external process to detect when the result returned by these list commands rolls back. This work is to support majority read for listDatabases by reading from a majority committed snapshot of the _mdb_catalog without actually introducing versioned catalog.&lt;/p&gt;

&lt;p&gt;And it should also work with sharded clusters.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1947754">SERVER-62006</key>
            <summary>Support majority read for _mdb_catalog</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="benety.goh@mongodb.com">Benety Goh</assignee>
                                    <reporter username="lingzhi.deng@mongodb.com">Lingzhi Deng</reporter>
                        <labels>
                    </labels>
                <created>Mon, 13 Dec 2021 15:35:07 +0000</created>
                <updated>Sun, 29 Oct 2023 21:45:08 +0000</updated>
                            <resolved>Fri, 25 Feb 2022 12:23:05 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="4376704" author="benety.goh" created="Fri, 25 Feb 2022 13:39:24 +0000"  >&lt;p&gt;Replaced original ticket summary with underlying issue (read access to durable catalog) extracted from description.&lt;/p&gt;</comment>
                            <comment id="4376083" author="xgen-internal-githook" created="Fri, 25 Feb 2022 02:39:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62006&quot; title=&quot;Support majority read for _mdb_catalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62006&quot;&gt;&lt;del&gt;SERVER-62006&lt;/del&gt;&lt;/a&gt; add read concern js test for listCatalog aggregation stage&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/14dfd0e4d652d7dff7e21f4eaa36e33e67d5ebff&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/14dfd0e4d652d7dff7e21f4eaa36e33e67d5ebff&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4376041" author="xgen-internal-githook" created="Fri, 25 Feb 2022 02:01:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62006&quot; title=&quot;Support majority read for _mdb_catalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62006&quot;&gt;&lt;del&gt;SERVER-62006&lt;/del&gt;&lt;/a&gt; add js test for listCatalog aggregation stage&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dc08f5388a525a721a002e3a171ef627584f25eb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dc08f5388a525a721a002e3a171ef627584f25eb&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4376018" author="xgen-internal-githook" created="Fri, 25 Feb 2022 01:26:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62006&quot; title=&quot;Support majority read for _mdb_catalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62006&quot;&gt;&lt;del&gt;SERVER-62006&lt;/del&gt;&lt;/a&gt; add listCatalog aggregation stage&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d41cbd82130527fb078c9d4b1f47c6d2611fcbb5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d41cbd82130527fb078c9d4b1f47c6d2611fcbb5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4375974" author="xgen-internal-githook" created="Fri, 25 Feb 2022 00:32:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62006&quot; title=&quot;Support majority read for _mdb_catalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62006&quot;&gt;&lt;del&gt;SERVER-62006&lt;/del&gt;&lt;/a&gt; add MongoProcessInterface::listCatalog()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/28ff939623b778778102bf387f5d28bd068893a9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/28ff939623b778778102bf387f5d28bd068893a9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4375604" author="xgen-internal-githook" created="Thu, 24 Feb 2022 21:36:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62006&quot; title=&quot;Support majority read for _mdb_catalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62006&quot;&gt;&lt;del&gt;SERVER-62006&lt;/del&gt;&lt;/a&gt; inline DurableCatalog::isFeatureDocument()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2a5b59c4fd6d4182f81755ebd1ff755dd88db6e9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2a5b59c4fd6d4182f81755ebd1ff755dd88db6e9&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1947755">SERVER-62007</issuekey>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="2137947">SERVER-69750</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1947757">SERVER-62008</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1995801">SERVER-64251</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="2377464">SERVER-78460</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1985131">SERVER-63754</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1994594">SERVER-64203</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1998470">SERVER-64404</issuekey>
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