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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-64344] Do not use atClusterTime when refreshing routing table on config server</title>
                <link>https://jira.mongodb.org/browse/SERVER-64344</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently on each collection refresh performed by a node of the CSRS we perform &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1574ce6570aff2ff6cc5e86f17ca77e0c01e9ee3/src/mongo/s/catalog/sharding_catalog_client_impl.cpp#L641&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;an aggregation&lt;/a&gt; with a snapshotReadConcern with an &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1574ce6570aff2ff6cc5e86f17ca77e0c01e9ee3/src/mongo/s/config_server_catalog_cache_loader.cpp#L68-L70&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;atClusterTime equal to the last locally applied optime&lt;/a&gt;. This means that every time we perform a collection refresh we will need to wait for the latest applied op time to be majority committed before we can take the snapshot.&lt;/p&gt;

&lt;p&gt;Instead we could simply use a snapshotReadConcern without specifying any cluster time so that we will read from &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src%2Fmongo%2Fdb%2Fread_concern_mongod.cpp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the latest committed snapshot&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1997538">SERVER-64344</key>
            <summary>Do not use atClusterTime when refreshing routing table on config server</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="tommaso.tocci@mongodb.com">Tommaso Tocci</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Mar 2022 11:04:07 +0000</created>
                <updated>Sun, 29 Oct 2023 21:41:23 +0000</updated>
                            <resolved>Mon, 14 Mar 2022 14:54:48 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4409759" author="xgen-internal-githook" created="Mon, 14 Mar 2022 13:31:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tommaso Tocci&apos;, &apos;email&apos;: &apos;tommaso.tocci@mongodb.com&apos;, &apos;username&apos;: &apos;toto-dev&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64344&quot; title=&quot;Do not use atClusterTime when refreshing routing table on config server&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64344&quot;&gt;&lt;del&gt;SERVER-64344&lt;/del&gt;&lt;/a&gt; Do not use atClusterTime when refreshing routing table on config server&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/960a4440e82f1fb274f0c4cb01dbda16c866cf88&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/960a4440e82f1fb274f0c4cb01dbda16c866cf88&lt;/a&gt;&lt;/p&gt;</comment>
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