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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-30804] LogicalSessionCollection must tolerate clock drift</title>
                <link>https://jira.mongodb.org/browse/SERVER-30804</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The logical session collection can&apos;t rely on lastUse as the ttl field for keep alive (because different nodes can have different clocks and you don&apos;t want a node far out of sync to kill running cursors).&lt;/p&gt;

&lt;p&gt;Instead, use in the cache should be use based (so that only records used since last refresh are pushed), and the update should set $currentDate on a new field which we actually use for ttl expiration.  This will restrict clock skew issues to chunk migration only (and in a way that theoretically could be handled sensibly in sharding)&lt;/p&gt;

&lt;p&gt;On the other side, cache&apos;s pulling session entries should only care if a record exists upstream (not if it&apos;s expired).  If it does exist, they should update their last use (but not push it unless they see a local activation)&lt;/p&gt;</description>
                <environment></environment>
        <key id="419613">SERVER-30804</key>
            <summary>LogicalSessionCollection must tolerate clock drift</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="mira.carey@mongodb.com">Mira Carey</assignee>
                                    <reporter username="mira.carey@mongodb.com">Mira Carey</reporter>
                        <labels>
                    </labels>
                <created>Wed, 23 Aug 2017 21:24:04 +0000</created>
                <updated>Mon, 29 Jan 2018 18:34:44 +0000</updated>
                            <resolved>Thu, 21 Sep 2017 20:10:30 +0000</resolved>
                                                                    <component>Internal Code</component>
                                        <votes>0</votes>
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