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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>
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<item>
            <title>[SERVER-55816] Investigate negative timeouts in connection pool</title>
                <link>https://jira.mongodb.org/browse/SERVER-55816</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Connection pools setup event timers to check if the network interface time limit is exceeded. Timeouts are handled by fulfilling the promise for pending requests with &lt;tt&gt;ErrorCodes::NetworkInterfaceExceededTimeLimit&lt;/tt&gt;. Older versions (v4.4 and before) also include the timeout (in milliseconds) in the error description.&lt;/p&gt;

&lt;p&gt;The timeout calculations may be susceptible to underflow, where the calculated timeout could be a negative number. This ticket should investigate the possibility of negative timeouts in&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/39fc7fd24d6098ccd1a8551db75108171ed6370a/src/mongo/executor/connection_pool.cpp#L1097-L1149&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ConnectionPool::SpecificPool::updateEventTimer()&lt;/a&gt; and propose fixes if necessary.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;Acceptance criteria:&lt;/p&gt;

&lt;p&gt;Write unit tests for the above mentioned function. Ensure one of the triggers a negative timeout and fix it. Timebox it to 1 day to write the unit test.&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1671811">SERVER-55816</key>
            <summary>Investigate negative timeouts in connection pool</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="tyler.seip@mongodb.com">Tyler Seip</assignee>
                                    <reporter username="amirsaman.memaripour@mongodb.com">Amirsaman Memaripour</reporter>
                        <labels>
                            <label>original-top-20</label>
                            <label>servicearch-q4-2021</label>
                            <label>servicearch-wfbf-day</label>
                    </labels>
                <created>Tue, 6 Apr 2021 14:17:01 +0000</created>
                <updated>Sun, 29 Oct 2023 21:55:18 +0000</updated>
                            <resolved>Fri, 14 Jan 2022 18:42:01 +0000</resolved>
                                                    <fixVersion>5.3.0</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4293835" author="xgen-internal-githook" created="Fri, 14 Jan 2022 18:40:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tyler Seip&apos;, &apos;email&apos;: &apos;Tyler.Seip@mongodb.com&apos;, &apos;username&apos;: &apos;tseip-mongo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55816&quot; title=&quot;Investigate negative timeouts in connection pool&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55816&quot;&gt;&lt;del&gt;SERVER-55816&lt;/del&gt;&lt;/a&gt;: Clamp negative timeouts in connection pools&apos; connections&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4371faec4e537ed676fba1f9e4af944a01a733c7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4371faec4e537ed676fba1f9e4af944a01a733c7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4082082" author="xgen-internal-githook" created="Fri, 24 Sep 2021 02:48:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;sergey.galtsev&apos;, &apos;email&apos;: &apos;sergey.galtsev@mongodb.com&apos;, &apos;username&apos;: &apos;brushless-glitch&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55816&quot; title=&quot;Investigate negative timeouts in connection pool&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55816&quot;&gt;&lt;del&gt;SERVER-55816&lt;/del&gt;&lt;/a&gt;: Clamp negative timeouts in connection pools&apos; connections&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit ed2e91304a83771f20e3df874222984c61a3e884.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/224536b8cf969b8dcbe34ea39d8d59c57747fee2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/224536b8cf969b8dcbe34ea39d8d59c57747fee2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4074907" author="xgen-internal-githook" created="Tue, 21 Sep 2021 17:00:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tyler Seip&apos;, &apos;email&apos;: &apos;Tyler.Seip@mongodb.com&apos;, &apos;username&apos;: &apos;tseip-mongo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55816&quot; title=&quot;Investigate negative timeouts in connection pool&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55816&quot;&gt;&lt;del&gt;SERVER-55816&lt;/del&gt;&lt;/a&gt;: Clamp negative timeouts in connection pools&apos; connections&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ed2e91304a83771f20e3df874222984c61a3e884&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ed2e91304a83771f20e3df874222984c61a3e884&lt;/a&gt;&lt;/p&gt;</comment>
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