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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>[DOCS-10907] Docs for SERVER-30482: Mongos should not close sessions to below the configured ShardingTaskExecutorPoolMinSize</title>
                <link>https://jira.mongodb.org/browse/DOCS-10907</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;We document them in the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/parameters/index.html#param.ShardingTaskExecutorPoolHostTimeoutMS&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/reference/parameters/index.html#param.ShardingTaskExecutorPoolHostTimeoutMS&lt;/a&gt;&lt;/p&gt;

&lt;h1&gt;&lt;a name=&quot;DocumentationRequestSummary%3A&quot;&gt;&lt;/a&gt;Documentation Request Summary: &lt;/h1&gt;


&lt;p&gt;The server is now enforcing and correcting bad values of these parameters in the following way. If they are documented, the documentation should probably reflect this:&lt;/p&gt;

&lt;p&gt;ShardingTaskExecutorPoolHostTimeoutMS &amp;gt; ShardingTaskExecutorPoolRefreshRequirementMS &amp;gt; ShardingTaskExecutorPoolRefreshTimeoutMS&lt;/p&gt;

&lt;p&gt;ShardingTaskExecutorPoolHostTimeoutMS &amp;gt; ShardingTaskExecutorPoolRefreshRequirementMS + ShardingTaskExecutorPoolRefreshTimeoutMS&lt;/p&gt;

&lt;h1&gt;&lt;a name=&quot;EngineeringTicketDescription%3A&quot;&gt;&lt;/a&gt;Engineering Ticket Description:&lt;/h1&gt;

&lt;p&gt;While doing some testing with mongos connection we noticed that if you set the ShardingTaskExecutorPoolHostTimeoutMS below the heartbeat timer mongos will close the idle sessions to secondaries (in our case they aren&apos;t in use). &lt;/p&gt;

&lt;p&gt;This is a poor behavior because ShardingTaskExecutorPoolMinSize is set to 1, and this ShardingTaskExecutorPoolHostTimeoutMS enforcement is causing the only single connection open to close-- which means that mongos must then immediately create a new one.&lt;/p&gt;

&lt;p&gt;Mongos should not close sessions to below the configured ShardingTaskExecutorPoolMinSize regardless of the configured ShardingTaskExecutorPoolHostTimeoutMS&lt;/p&gt;</description>
                <environment></environment>
        <key id="446049">DOCS-10907</key>
            <summary>Docs for SERVER-30482: Mongos should not close sessions to below the configured ShardingTaskExecutorPoolMinSize</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="kevin.albertson@mongodb.com">Kevin Albertson</assignee>
                                    <reporter username="kay.kim@mongodb.com">Kay Kim</reporter>
                        <labels>
                            <label>neweng</label>
                            <label>platforms-interns-2017</label>
                    </labels>
                <created>Mon, 16 Oct 2017 16:03:54 +0000</created>
                <updated>Mon, 13 Nov 2023 18:34:52 +0000</updated>
                            <resolved>Mon, 6 Nov 2017 18:59:49 +0000</resolved>
                                                    <fixVersion>3.6.0-rc0</fixVersion>
                    <fixVersion>3.4.11</fixVersion>
                    <fixVersion>3.2.18</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2090139" author="xgen-internal-githook" created="Thu, 13 Dec 2018 19:35:37 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;kevinAlbs&apos;, &apos;email&apos;: &apos;kevin.albertson@10gen.com&apos;, &apos;name&apos;: &apos;Kevin Albertson&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-10907&quot; title=&quot;Docs for SERVER-30482: Mongos should not close sessions to below the configured ShardingTaskExecutorPoolMinSize&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-10907&quot;&gt;&lt;del&gt;DOCS-10907&lt;/del&gt;&lt;/a&gt; add sharding parameter constraints&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/2b1e3954d9c43730c6ee35bac1ddcc45173238dd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/2b1e3954d9c43730c6ee35bac1ddcc45173238dd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2090137" author="xgen-internal-githook" created="Thu, 13 Dec 2018 19:34:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;kevinAlbs&apos;, &apos;email&apos;: &apos;kevin.albertson@10gen.com&apos;, &apos;name&apos;: &apos;Kevin Albertson&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-10907&quot; title=&quot;Docs for SERVER-30482: Mongos should not close sessions to below the configured ShardingTaskExecutorPoolMinSize&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-10907&quot;&gt;&lt;del&gt;DOCS-10907&lt;/del&gt;&lt;/a&gt; add sharding parameter constraints&lt;br/&gt;
Branch: v3.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/e828d5aa4dbcdefa074e36515c425a1a42fe3393&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/e828d5aa4dbcdefa074e36515c425a1a42fe3393&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1717837" author="xgen-internal-githook" created="Mon, 6 Nov 2017 18:15:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kevin Albertson&apos;, &apos;username&apos;: &apos;kevinAlbs&apos;, &apos;email&apos;: &apos;kevin.albertson@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-10907&quot; title=&quot;Docs for SERVER-30482: Mongos should not close sessions to below the configured ShardingTaskExecutorPoolMinSize&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-10907&quot;&gt;&lt;del&gt;DOCS-10907&lt;/del&gt;&lt;/a&gt; add sharding parameter constraints&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/0bd7497e7504996f472b02c2afa2757506f65c5c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/0bd7497e7504996f472b02c2afa2757506f65c5c&lt;/a&gt;&lt;/p&gt;</comment>
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