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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-9041] proactively detect broken connections detected by the network</title>
                <link>https://jira.mongodb.org/browse/SERVER-9041</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When a host fails cleanly or connections are broken by keepalive failures, we should respond to OS-level info about connection state and clear these connections before using from the pool.&lt;/p&gt;</description>
                <environment>All OSes except 32-bit windows, which has a different polling interface.</environment>
        <key id="69178">SERVER-9041</key>
            <summary>proactively detect broken connections detected by the network</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="greg_10gen">Greg Studer</reporter>
                        <labels>
                    </labels>
                <created>Wed, 20 Mar 2013 22:29:30 +0000</created>
                <updated>Mon, 11 Jul 2016 17:58:16 +0000</updated>
                            <resolved>Mon, 13 May 2013 19:25:28 +0000</resolved>
                                                    <fixVersion>2.5.0</fixVersion>
                                    <component>Internal Client</component>
                    <component>Sharding</component>
                                        <votes>1</votes>
                                    <watches>22</watches>
                                                                                                                <comments>
                            <comment id="442431" author="brettkiefer" created="Thu, 17 Oct 2013 18:51:10 +0000"  >&lt;p&gt;I&apos;d like to clarify what this fix does.&lt;/p&gt;

&lt;p&gt;It looks like the current situation (in mongodb 2.4) is that if a replica set primary loses its network connectivity (we simulate that by doing &apos;sudo ifdown eth0&apos; on the primary), then reelection happens normally and mongos detects the new primary, BUT existing client connections via that mongos instance will not be terminated, and will continue in their hanging state.&lt;/p&gt;

&lt;p&gt;Is that what this is meant to fix? If so, might it be eligible for backporting, since this puts an odd responsibility on the client to detect a replica set failure when connected through mongos, and causes effective downtime even though failover has occurred?&lt;/p&gt;</comment>
                            <comment id="386377" author="auto" created="Mon, 22 Jul 2013 18:30:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;milkie&apos;, u&apos;name&apos;: u&apos;Eric Milkie&apos;, u&apos;email&apos;: u&apos;milkie@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10261&quot; title=&quot;Disable SSL session caching on server to avoid Java driver SSL connection problems&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10261&quot;&gt;&lt;del&gt;SERVER-10261&lt;/del&gt;&lt;/a&gt; end TCP sockets cleanly&lt;/p&gt;

&lt;p&gt;This is a partial backport of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9041&quot; title=&quot;proactively detect broken connections detected by the network&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9041&quot;&gt;&lt;del&gt;SERVER-9041&lt;/del&gt;&lt;/a&gt;&apos;s commit.  In particular, this fixes an issue with&lt;br/&gt;
SSL and the Java driver&apos;s session caching.&lt;br/&gt;
Branch: v2.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7ea27bae26b61e16439a36431e71d030842acd2c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7ea27bae26b61e16439a36431e71d030842acd2c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="334896" author="auto" created="Mon, 13 May 2013 23:06:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2013-05-13T23:04:53Z&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9041&quot; title=&quot;proactively detect broken connections detected by the network&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9041&quot;&gt;&lt;del&gt;SERVER-9041&lt;/del&gt;&lt;/a&gt; try num 2, disable inapplicable tests for win32&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/62fec3e663bf160aafc7663bb5b35a28da314fc2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/62fec3e663bf160aafc7663bb5b35a28da314fc2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="334715" author="auto" created="Mon, 13 May 2013 19:49:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2013-05-13T19:48:34Z&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9041&quot; title=&quot;proactively detect broken connections detected by the network&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9041&quot;&gt;&lt;del&gt;SERVER-9041&lt;/del&gt;&lt;/a&gt; disable inapplicable tests for win32&quot;&lt;/p&gt;

&lt;p&gt;Can&apos;t use db variable in sharding tests without instantiating it first.&lt;/p&gt;

&lt;p&gt;This reverts commit 24fd0ec8b02ee86f9d11bf4a6cbf04aae42ccf65.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/08a2fa3f08f72f02958c5a7128121f7e75ce602e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/08a2fa3f08f72f02958c5a7128121f7e75ce602e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="334676" author="auto" created="Mon, 13 May 2013 19:18:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2013-05-13T19:04:30Z&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9041&quot; title=&quot;proactively detect broken connections detected by the network&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9041&quot;&gt;&lt;del&gt;SERVER-9041&lt;/del&gt;&lt;/a&gt; disable inapplicable tests for win32&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/24fd0ec8b02ee86f9d11bf4a6cbf04aae42ccf65&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/24fd0ec8b02ee86f9d11bf4a6cbf04aae42ccf65&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="332786" author="auto" created="Fri, 10 May 2013 14:17:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2013-05-10T14:16:20Z&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9041&quot; title=&quot;proactively detect broken connections detected by the network&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9041&quot;&gt;&lt;del&gt;SERVER-9041&lt;/del&gt;&lt;/a&gt; shard_kill_and_pooling.js need to reset lock file when journaling is off on unclean shutdown&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/10a960aebd1e9eba978578377139fabb4b7dbeef&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/10a960aebd1e9eba978578377139fabb4b7dbeef&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="332329" author="auto" created="Thu, 9 May 2013 21:29:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2013-03-28T20:26:16Z&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9041&quot; title=&quot;proactively detect broken connections detected by the network&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9041&quot;&gt;&lt;del&gt;SERVER-9041&lt;/del&gt;&lt;/a&gt; proactively detect background conn failures in conn pools&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/61b8f72884dc6fee89b91a30021f41e50cb9de0e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/61b8f72884dc6fee89b91a30021f41e50cb9de0e&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
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                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="50197">SERVER-7008</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="28547">SERVER-4706</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="82880">SERVER-10261</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
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                                        <issuelink>
            <issuekey id="38216">SERVER-5793</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="78749">SERVER-9908</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="28547">SERVER-4706</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="30875">SERVER-4997</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="38216">SERVER-5793</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="57164">SERVER-7743</issuekey>
        </issuelink>
                            </inwardlinks>
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