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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-32655] in mongos log will have some  couldn&apos;t check dbhash on config server  DBClientBase::findN: transport error warn,but could read and write data to shard cluster  </title>
                <link>https://jira.mongodb.org/browse/SERVER-32655</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&#20869;&#23481;:2018-01-11 14:10 CST &#21040; 2018-01-11 14:12 CST &#26399;&#38388;&#26085;&#24535;&#65306;&lt;br/&gt;
  couldn&apos;t check dbhash on config server 10.200.65.131:27019 :: caused by :: 10276 DBClientBase::findN: transport error: 10.200.65.131:27019 ns: config.$cmd query: &lt;/p&gt;
{ dbhash: 1, collections: [ &quot;chunks&quot;, &quot;databases&quot;, &quot;collections&quot;, &quot;shards&quot;, &quot;version&quot; ] }
&lt;p&gt;  couldn&apos;t check dbhash on config server 10.200.65.131:27019 :: caused by :: 10276 DBClientBase::findN: transport error: 10.200.65.131:27019 ns: config.$cmd query: &lt;/p&gt;
{ dbhash: 1, collections: [ &quot;chunks&quot;, &quot;databases&quot;, &quot;collections&quot;, &quot;shards&quot;, &quot;version&quot; ] }</description>
                <environment></environment>
        <key id="481576">SERVER-32655</key>
            <summary>in mongos log will have some  couldn&apos;t check dbhash on config server  DBClientBase::findN: transport error warn,but could read and write data to shard cluster  </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="13202">Works as Designed</resolution>
                                        <assignee username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="hancang2000@126.com">Andrew zhou</reporter>
                        <labels>
                    </labels>
                <created>Thu, 11 Jan 2018 07:10:30 +0000</created>
                <updated>Fri, 27 Oct 2023 13:54:01 +0000</updated>
                            <resolved>Thu, 11 Jan 2018 20:35:35 +0000</resolved>
                                    <version>3.0.12</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1773527" author="ramon.fernandez" created="Sat, 13 Jan 2018 00:37:06 +0000"  >&lt;p&gt;Please note that the SERVER project is for reporting bugs or feature suggestions for the MongoDB server. For MongoDB-related support discussion please post on the &lt;a href=&quot;http://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 &lt;a href=&quot;http://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;, where your question will reach a larger audience. A question like this involving more discussion would be best posted on the &lt;a href=&quot;http://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;. See also our &lt;a href=&quot;https://www.mongodb.org/about/support/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Technical Support page&lt;/a&gt; for additional support resources.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                            <comment id="1772364" author="hancang2000@126.com" created="Fri, 12 Jan 2018 02:41:54 +0000"  >&lt;p&gt;hi Kaloian Manassiev &lt;br/&gt;
             I&apos;am want to tell you ,we have too many mongos connects get into connect the config mongod, this will trigger this mongos DBClientBase::findN: transport error ,we find sometime will have 20000-40000 connect from mongos to config ,but mongos only need to have get config metadata,not need too many connnect to config ,because we read and write date is from shard .&lt;/p&gt;</comment>
                            <comment id="1772031" author="kaloian.manassiev" created="Thu, 11 Jan 2018 20:35:24 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=hancang2000%40126.com&quot; class=&quot;user-hover&quot; rel=&quot;hancang2000@126.com&quot;&gt;hancang2000@126.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;The message that you are seeing is just a transient network failure reported by the background thread, which checks the contents of the legacy SCCC config server for consistency. It doesn&apos;t imply any configuration data errors and that&apos;s why your reads and writes can continue.&lt;/p&gt;

&lt;p&gt;Hope this helps.&lt;/p&gt;

&lt;p&gt;Best regards,&lt;br/&gt;
-Kal.&lt;/p&gt;</comment>
                            <comment id="1771142" author="hancang2000@126.com" created="Thu, 11 Jan 2018 07:12:03 +0000"  >&lt;p&gt;This Problem find in MongoDB shell version: 3.0.12&lt;/p&gt;</comment>
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