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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-71390] Telemetry store read lock triggers an assertion when used in multiple threads</title>
                <link>https://jira.mongodb.org/browse/SERVER-71390</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt; &lt;span class=&quot;error&quot;&gt;&amp;#91;j5:c:prim&amp;#93;&lt;/span&gt; | 2022-11-15T17:57:43.125+00:00 F  ASSERT   23079   &lt;span class=&quot;error&quot;&gt;&amp;#91;conn26&amp;#93;&lt;/span&gt; &quot;Invariant failure&quot;,&quot;attr&quot;:&lt;/p&gt;
{&quot;expr&quot;:&quot;request-&amp;gt;recursiveCount &amp;gt; 0&quot;,&quot;file&quot;:&quot;src/mongo/db/concurrency/lock_manager.cpp&quot;,&quot;line&quot;:539}

&lt;p/&gt;
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&lt;p/&gt;</description>
                <environment></environment>
        <key id="2186978">SERVER-71390</key>
            <summary>Telemetry store read lock triggers an assertion when used in multiple threads</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="13201">Fixed</resolution>
                                        <assignee username="jess.balint@mongodb.com">Jess Balint</assignee>
                                    <reporter username="jess.balint@mongodb.com">Jess Balint</reporter>
                        <labels>
                    </labels>
                <created>Tue, 15 Nov 2022 20:08:33 +0000</created>
                <updated>Sun, 29 Oct 2023 21:30:30 +0000</updated>
                            <resolved>Tue, 29 Nov 2022 00:31:57 +0000</resolved>
                                    <version>6.2.0-rc2</version>
                                    <fixVersion>6.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="5012705" author="xgen-internal-githook" created="Mon, 28 Nov 2022 19:55:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jess Balint&apos;, &apos;email&apos;: &apos;jbalint@gmail.com&apos;, &apos;username&apos;: &apos;jbalint&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71390&quot; title=&quot;Telemetry store read lock triggers an assertion when used in multiple threads&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71390&quot;&gt;&lt;del&gt;SERVER-71390&lt;/del&gt;&lt;/a&gt; locking fix&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/507288cdeed26adbdab4eccd66cb48b73d96559e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/507288cdeed26adbdab4eccd66cb48b73d96559e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4988443" author="david.storch" created="Wed, 16 Nov 2022 22:55:10 +0000"  >&lt;p&gt;What&apos;s the rationale for the telemetry store having its own &lt;tt&gt;LockerImpl&lt;/tt&gt; instance?&#160;I assumed that the telemetry store would work like the plan cache &amp;#8211; namely, it would be initialized on process startup before we begin collecting telemetry. During steady-state operation, the concurrency control would be implemented using our &lt;a href=&quot;https://github.com/mongodb/mongo/blob/925eaf9e18d9f560d4dbd0aaf6c86c2cde6e52d4/src/mongo/db/catalog/util/partitioned.h&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;Partitioned&lt;/tt&gt;&lt;/a&gt; utility, which under the hood has a vector of mutexes.&lt;/p&gt;</comment>
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