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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-27957] mongos Failed to connect to shards ExceededTimeLimit: Operation timed out, request was RemoteCommand</title>
                <link>https://jira.mongodb.org/browse/SERVER-27957</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;sometimes mongos failed to connect to shard servers ,like this &lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[NetworkInterfaceASIO-TaskExecutorPool-0-0] Failed to connect to 172.*.*.*:10000 - ExceededTimeLimit: Operation timed out, request was RemoteCommand 2032618 -- target:172.*.*.*:10000 db:admin cmd:{ isMaster: 1 }&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;[conn64648] Invariant failure event.isValid() src/mongo/executor/thread_pool_task_executor.cpp 256&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;restart the mongos can solve this problem,In a few days&#65292;this problem once again.&lt;/p&gt;

&lt;p&gt;Now it is running normally&#65292;the mongos connet to shard servers every 15 seconds,behavior like this happen much too often. what wrong with it?   &lt;/p&gt;</description>
                <environment></environment>
        <key id="352843">SERVER-27957</key>
            <summary>mongos Failed to connect to shards ExceededTimeLimit: Operation timed out, request was RemoteCommand</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="4">Incomplete</resolution>
                                        <assignee username="mark.agarunov">Mark Agarunov</assignee>
                                    <reporter username="tom.tang@mongodb.com">Tom Tang</reporter>
                        <labels>
                    </labels>
                <created>Thu, 9 Feb 2017 06:24:04 +0000</created>
                <updated>Mon, 27 Feb 2017 18:28:39 +0000</updated>
                            <resolved>Mon, 27 Feb 2017 18:28:39 +0000</resolved>
                                    <version>3.4.0</version>
                                                    <component>Networking</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1510486" author="thomas.schubert" created="Mon, 27 Feb 2017 18:28:39 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tom.tang&quot; class=&quot;user-hover&quot; rel=&quot;tom.tang&quot;&gt;tom.tang&lt;/a&gt;, &lt;/p&gt;

&lt;p&gt;We haven&#8217;t heard back from you for some time, so I&#8217;m going to mark this ticket as resolved. If this is still an issue for you, please provide additional information and we will reopen the ticket.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1498141" author="mark.agarunov" created="Mon, 13 Feb 2017 21:19:02 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tom.tang&quot; class=&quot;user-hover&quot; rel=&quot;tom.tang&quot;&gt;tom.tang&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Thank you for the report. To better determine the cause of the behavior you are describing, please provide the following:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Complete logs from &lt;tt&gt;mongod&lt;/tt&gt; for the period of time this issue was present.&lt;/li&gt;
	&lt;li&gt;Complete logs from &lt;tt&gt;mongos&lt;/tt&gt; for the period of time this issue was present.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Thank you,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                            <comment id="1495697" author="tom.tang" created="Thu, 9 Feb 2017 06:37:21 +0000"  >&lt;p&gt;This problem appears since shards adding auth,keyfile is right and the role is root .&lt;/p&gt;

&lt;p&gt;The shard has been running for a few days since started auth.&lt;/p&gt;</comment>
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