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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-36554] computeAtClusterTimeForOneShard should return the latest clusterTime if there is no cached lastCommittedOpTime</title>
                <link>https://jira.mongodb.org/browse/SERVER-36554</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;tt&gt;computeAtClusterTimeForOneShard&lt;/tt&gt; is used to select an atClusterTime for requests with snapshot level readConcern targeting a single shard (typically an unsharded collection). Currently it always returns the latest cached lastCommittedOpTime for the targeted shard from the ShardRegistry. The hook that updates this value does not run on all connections though, so it is possible for this value to be null, in which case atClusterTime would be a null logical time, which is not allowed and triggers an invariant.&lt;/p&gt;

&lt;p&gt;Instead, if there is no cached value, the function should return the latest in-memory cluster time from the logical clock.&lt;/p&gt;</description>
                <environment></environment>
        <key id="586054">SERVER-36554</key>
            <summary>computeAtClusterTimeForOneShard should return the latest clusterTime if there is no cached lastCommittedOpTime</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="jack.mulrow@mongodb.com">Jack Mulrow</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                    </labels>
                <created>Thu, 9 Aug 2018 16:09:10 +0000</created>
                <updated>Sun, 29 Oct 2023 22:29:06 +0000</updated>
                            <resolved>Fri, 10 Aug 2018 13:37:40 +0000</resolved>
                                                    <fixVersion>4.1.2</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1972508" author="xgen-internal-githook" created="Fri, 10 Aug 2018 13:34:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;jsmulrow&apos;, &apos;name&apos;: &apos;Jack Mulrow&apos;, &apos;email&apos;: &apos;jack.mulrow@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36554&quot; title=&quot;computeAtClusterTimeForOneShard should return the latest clusterTime if there is no cached lastCommittedOpTime&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36554&quot;&gt;&lt;del&gt;SERVER-36554&lt;/del&gt;&lt;/a&gt; Make computeAtClusterTimeForOneShard return latest clusterTime if there is no cached last committed opTime&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/60a9c20ec95c4cceda9413e18334c55bb85fe66e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/60a9c20ec95c4cceda9413e18334c55bb85fe66e&lt;/a&gt;&lt;/p&gt;</comment>
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