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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-43311] Uncommon bug makes logical session cache not refresh</title>
                <link>https://jira.mongodb.org/browse/SERVER-43311</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;A problem that has occurred on a replica set twice thus far - once in production, once during testing. For some reason, sometimes the logical session cache stops refreshing against the main session store, collecting a backlog of logical sessions until it hits the 1 million session cap, which causes queries to start to fail with a 261: TooManyLogicalSessions error.&lt;/p&gt;

&lt;p&gt;The tests we did to try and pinpoint the cause of the bug (and with which we caused it again) were using the NodeJS 3.3.2 driver (for Node 10.16.3), and the Python 3.9.0 driver (for Python 3.7.4)&#160; respectively.&lt;/p&gt;

&lt;p&gt;The test environment was a 4.0.12 replicaset with one primary, one secondary and an arbiter.&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="925781">SERVER-43311</key>
            <summary>Uncommon bug makes logical session cache not refresh</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="4">Incomplete</resolution>
                                        <assignee username="daniel.hatcher@mongodb.com">Danny Hatcher</assignee>
                                    <reporter username="tiacobescu@bitdefender.com">Iacobescu Tudor</reporter>
                        <labels>
                    </labels>
                <created>Fri, 13 Sep 2019 10:30:25 +0000</created>
                <updated>Fri, 6 Dec 2019 19:58:24 +0000</updated>
                            <resolved>Fri, 6 Dec 2019 19:58:24 +0000</resolved>
                                    <version>4.0.12</version>
                                                                        <votes>2</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="2525944" author="daniel.hatcher" created="Fri, 8 Nov 2019 20:09:48 +0000"  >&lt;p&gt;The ticket you linked is behavior that is working as designed. In order to confirm whether or not that was the situation, we&apos;d need the logs and &quot;diagnostic.data&quot; that I mentioned in my previous comment. Have you experienced the issue again since the original occurrence?&lt;/p&gt;</comment>
                            <comment id="2423150" author="tiacobescu@bitdefender.com" created="Tue, 17 Sep 2019 14:09:27 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43312&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-43312&lt;/a&gt;&#160;&lt;br/&gt;
May be related to this.&lt;/p&gt;</comment>
                            <comment id="2422497" author="tiacobescu@bitdefender.com" created="Tue, 17 Sep 2019 06:14:38 +0000"  >&lt;p&gt;Unfortunately, we have not managed to reproduce the bug again yet. We will continue trying, and will supply the logs when it happens again.&lt;/p&gt;</comment>
                            <comment id="2421760" author="daniel.hatcher" created="Mon, 16 Sep 2019 17:28:47 +0000"  >&lt;p&gt;In order for us to investigate, please provide the following to our &lt;a href=&quot;https://10gen-httpsupload.s3.amazonaws.com/upload_forms/1f1b3ab9-0cac-4072-aa15-3d4f382013b6.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Secure Uploader&lt;/a&gt;. Only MongoDB engineers will be able to access the files.&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;&lt;tt&gt;mongod&lt;/tt&gt; log file from Primary covering from a restart until you first receive the error&lt;/li&gt;
	&lt;li&gt;&quot;diagnostic.data&quot; folder from Primary for the same timeframe&lt;/li&gt;
&lt;/ul&gt;
</comment>
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