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    <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-3613] Failing Queries on large collection (130GB) </title>
                <link>https://jira.mongodb.org/browse/SERVER-3613</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Queries start failing after loading large results via cursors. Server restart helps but after a number of queries error comes up again.&lt;/p&gt;

&lt;p&gt;Collection contains 15Mio documents including text fields. Queries fail from mongo shell and using the java driver:&lt;br/&gt;
&amp;gt; db.WPI2.find().count()&lt;br/&gt;
Tue Aug 16 17:36:35 DBClientCursor::init call() failed&lt;br/&gt;
Tue Aug 16 17:36:35 query failed : test.$cmd { count: &quot;WPI2&quot;, query: {}, fields: {} } to: 127.0.0.1&lt;br/&gt;
Tue Aug 16 17:36:35 Error: error doing query: failed shell/collection.js:150&lt;br/&gt;
Tue Aug 16 17:36:35 trying reconnect to 127.0.0.1&lt;br/&gt;
Tue Aug 16 17:36:35 reconnect 127.0.0.1 ok&lt;/p&gt;


&lt;p&gt;Mongod allocatates about 10GB of memory (Resident set but shared). Server is not swapping, though.&lt;/p&gt;

</description>
                <environment>Debian Linux AMD64, 16GB Ram, 200GB disk</environment>
        <key id="21060">SERVER-3613</key>
            <summary>Failing Queries on large collection (130GB) </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="5">Cannot Reproduce</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="kurtl">Kurt</reporter>
                        <labels>
                    </labels>
                <created>Tue, 16 Aug 2011 15:57:54 +0000</created>
                <updated>Fri, 30 Mar 2012 14:37:10 +0000</updated>
                            <resolved>Wed, 17 Aug 2011 15:22:54 +0000</resolved>
                                    <version>1.8.2</version>
                                                    <component>Stability</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="49017" author="kurtl" created="Wed, 17 Aug 2011 15:16:26 +0000"  >&lt;p&gt;Hello Eliot,&lt;/p&gt;

&lt;p&gt;I have run several long queries but have not been able to reconstruct the problem.&lt;/p&gt;

&lt;p&gt;I will post again if/when it reappears.&lt;/p&gt;

&lt;p&gt;Kurt&lt;/p&gt;</comment>
                            <comment id="48877" author="eliot" created="Tue, 16 Aug 2011 17:44:56 +0000"  >&lt;p&gt;-vvvvv&lt;/p&gt;</comment>
                            <comment id="48876" author="kurtl" created="Tue, 16 Aug 2011 17:43:10 +0000"  >&lt;p&gt;Hello Eliot,&lt;/p&gt;

&lt;p&gt;will do that tomorrow. Server log didn&apos;t show any errors, though. Can I increase the log level somehow?&lt;/p&gt;</comment>
                            <comment id="48863" author="eliot" created="Tue, 16 Aug 2011 17:23:36 +0000"  >&lt;p&gt;Can you attach server log?&lt;/p&gt;</comment>
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