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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-77195] executor::ConnectionPool should appropriately handle the case where a connection is returned with a network error</title>
                <link>https://jira.mongodb.org/browse/SERVER-77195</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Essentially, we need to address this TODO: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/744678da09dcab9885ae6af3e368864387fbfb82/src/mongo/executor/connection_pool.cpp#L1013&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/744678da09dcab9885ae6af3e368864387fbfb82/src/mongo/executor/connection_pool.cpp#L1013&lt;/a&gt;&#160;&lt;/p&gt;

&lt;p&gt;Currently, when a connection is checked out from the pool and is returned with failure indicated, we discard that individual connection. However, we don&apos;t examine the failure in any way, and don&apos;t drop other connections to the same host (and bump the SpecificPool generation appropriately) if the failure is a Network error or other error that leads us to believe that the host is down and current-generation connections are likely to be unhealthy.&#160;&lt;/p&gt;

&lt;p&gt;This is distinct from the behavior in the case where we&#160; observe a network-error on a connection during the refresh process; in this case, we treat the host as down, bump the generation of the SpecificPool to that host, and drop other connections to that host. The cases of a network error on a returned connection vs. one that has finished refreshing are very similar and should probably be treated in the same manner.&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2342749">SERVER-77195</key>
            <summary>executor::ConnectionPool should appropriately handle the case where a connection is returned with a network error</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="george.wangensteen@mongodb.com">George Wangensteen</assignee>
                                    <reporter username="george.wangensteen@mongodb.com">George Wangensteen</reporter>
                        <labels>
                    </labels>
                <created>Tue, 16 May 2023 19:36:34 +0000</created>
                <updated>Sun, 29 Oct 2023 21:21:23 +0000</updated>
                            <resolved>Thu, 15 Jun 2023 15:42:40 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>6.0.7</fixVersion>
                    <fixVersion>7.0.0-rc4</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5500917" author="xgen-internal-githook" created="Thu, 15 Jun 2023 09:41:36 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;George Wangensteen&apos;, &apos;email&apos;: &apos;george.wangensteen@mongodb.com&apos;, &apos;username&apos;: &apos;gewa24&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77195&quot; title=&quot;executor::ConnectionPool should appropriately handle the case where a connection is returned with a network error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77195&quot;&gt;&lt;del&gt;SERVER-77195&lt;/del&gt;&lt;/a&gt; Make executor::ConnectionPool close current generation connections to a remote when a connection to that remote is returned with a network error    (cherry picked from commit 085eb1f4d5aba0414df96071084aa0d0620ba153)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2cfe1350443e89c12a7e345130d90de7bd318ab2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2cfe1350443e89c12a7e345130d90de7bd318ab2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5497263" author="xgen-internal-githook" created="Wed, 14 Jun 2023 02:45:59 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;George Wangensteen&apos;, &apos;email&apos;: &apos;george.wangensteen@mongodb.com&apos;, &apos;username&apos;: &apos;gewa24&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77195&quot; title=&quot;executor::ConnectionPool should appropriately handle the case where a connection is returned with a network error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77195&quot;&gt;&lt;del&gt;SERVER-77195&lt;/del&gt;&lt;/a&gt; Make executor::ConnectionPool close current generation connections to a remote when a connection to that remote is returned with a network error&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 085eb1f4d5aba0414df96071084aa0d0620ba153)&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3f389bf74e17e99076945d8590443418acbdadf2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3f389bf74e17e99076945d8590443418acbdadf2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5496168" author="xgen-internal-githook" created="Tue, 13 Jun 2023 17:52:26 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;George Wangensteen&apos;, &apos;email&apos;: &apos;george.wangensteen@mongodb.com&apos;, &apos;username&apos;: &apos;gewa24&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-77195&quot; title=&quot;executor::ConnectionPool should appropriately handle the case where a connection is returned with a network error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-77195&quot;&gt;&lt;del&gt;SERVER-77195&lt;/del&gt;&lt;/a&gt; Make executor::ConnectionPool close current generation connections to a remote when a connection to that remote is returned with a network error&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/085eb1f4d5aba0414df96071084aa0d0620ba153&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/085eb1f4d5aba0414df96071084aa0d0620ba153&lt;/a&gt;&lt;/p&gt;</comment>
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