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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-46078] sudden spike in connections for mongos </title>
                <link>https://jira.mongodb.org/browse/SERVER-46078</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;mongodb version used : 3.4.10&lt;/p&gt;

&lt;p&gt;instance type : t2.medium (2 cpu,4 gb ram)&lt;/p&gt;

&lt;p&gt;present parameter settings :&lt;br/&gt;
 &quot;ShardingTaskExecutorPoolHostTimeoutMS&quot; : 300000.0, &lt;br/&gt;
 &quot;ShardingTaskExecutorPoolMaxConnecting&quot; : -1.0, &lt;br/&gt;
 &quot;ShardingTaskExecutorPoolMaxSize&quot; : -1.0, &lt;br/&gt;
 &quot;ShardingTaskExecutorPoolMinSize&quot; : 1.0, &lt;br/&gt;
 &quot;ShardingTaskExecutorPoolRefreshRequirementMS&quot; : 60000.0, &lt;br/&gt;
 &quot;ShardingTaskExecutorPoolRefreshTimeoutMS&quot; : 20000.0, &lt;br/&gt;
 &quot;connPoolMaxConnsPerHost&quot; : 200.0, &lt;br/&gt;
 &quot;connPoolMaxShardedConnsPerHost&quot; : 200.0, &lt;br/&gt;
 &quot;cursorTimeoutMillis&quot; : NumberLong(600000), &lt;br/&gt;
 &quot;taskExecutorPoolSize&quot; : 0.0, &lt;/p&gt;

&lt;p&gt;I think the issue is related to ticket(&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25027&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-25027&lt;/a&gt;)&#160; but as per the documentation for version 3.4 the parameter taskExecutorPoolSize should have values from 4-64 ,I am confused as we have this parameter set to 0&#160;&lt;/p&gt;

&lt;p&gt;what does value 0 for &#160;taskExecutorPoolSize parameter mean in version 3.4&lt;/p&gt;

&lt;p&gt;&#160; &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;img src=&quot;https://jira.mongodb.org/secure/attachment/247138/247138_image-2020-02-11-11-04-03-825.png&quot; style=&quot;border: 0px solid black&quot; /&gt;&lt;/span&gt;&lt;/p&gt;

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

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

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1143333">SERVER-46078</key>
            <summary>sudden spike in connections for mongos </summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="sudheer.bholla@practicefusion.com">sudheer reddy bholla</reporter>
                        <labels>
                    </labels>
                <created>Tue, 11 Feb 2020 17:05:54 +0000</created>
                <updated>Thu, 13 Feb 2020 22:41:47 +0000</updated>
                            <resolved>Thu, 13 Feb 2020 22:41:47 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="2877710" author="carl.champain" created="Thu, 13 Feb 2020 22:41:40 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=sudheer.bholla%40practicefusion.com&quot; class=&quot;user-hover&quot; rel=&quot;sudheer.bholla@practicefusion.com&quot;&gt;sudheer.bholla@practicefusion.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;MongoDB 3.4 is already end-of-lifed, which means it is unsupported by us. We strongly recommend you upgrade to a&#160;&lt;a href=&quot;https://www.mongodb.com/support-policy&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;supported version&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;That said, the SERVER project is for bugs and feature suggestions for the MongoDB server. As this ticket does not appear to be a bug, I will now close it. If you need assistance troubleshooting, I encourage you to ask our community by posting on the &lt;a href=&quot;https://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or on &lt;a href=&quot;https://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Carl&lt;/p&gt;</comment>
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                            <attachment id="247138" name="image-2020-02-11-11-04-03-825.png" size="36707" author="sudheer.bholla@practicefusion.com" created="Tue, 11 Feb 2020 17:04:04 +0000"/>
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