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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>
    </build-info>


<item>
            <title>[SERVER-74755] Collection sample counters not removed atomically with sample reconfiguration</title>
                <link>https://jira.mongodb.org/browse/SERVER-74755</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In BF-28001, one writing thread is generating a sample ID and invokes the collection&apos;s sample counters. In another thread, query sampling on this collection is being disabled, and the collection&apos;s sample counters are removed first, and then the collection&apos;s sampling configuration is removed. Because these two removals do not happen atomically, the writing thread decides to generate a sample ID, but then an invariant is false when it cannot fetch the collection&apos;s sample counters.&lt;/p&gt;

&lt;p&gt;The removal of a sampling configuration and the removal of the collection&apos;s sample counters must occur atomically, within &lt;tt&gt;QueryAnalysisSampler::_refreshConfigurations()&lt;/tt&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2285984">SERVER-74755</key>
            <summary>Collection sample counters not removed atomically with sample reconfiguration</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="israel.hsu@mongodb.com">Israel Hsu</assignee>
                                    <reporter username="israel.hsu@mongodb.com">Israel Hsu</reporter>
                        <labels>
                            <label>auto-reverted</label>
                    </labels>
                <created>Fri, 10 Mar 2023 20:44:58 +0000</created>
                <updated>Sun, 29 Oct 2023 21:25:04 +0000</updated>
                            <resolved>Tue, 4 Apr 2023 14:41:21 +0000</resolved>
                                    <version>7.0.0-rc0</version>
                                    <fixVersion>7.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5285453" author="xgen-internal-githook" created="Mon, 20 Mar 2023 16:35:24 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Israel Hsu&apos;, &apos;email&apos;: &apos;israel.hsu@mongodb.com&apos;, &apos;username&apos;: &apos;israelhsu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-74755&quot; title=&quot;Collection sample counters not removed atomically with sample reconfiguration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-74755&quot;&gt;&lt;del&gt;SERVER-74755&lt;/del&gt;&lt;/a&gt; Make QueryAnalysisSampleCounters refresh config atomic with sampler refresh&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b920e7b5b6628714e49e09ff5521182a68056915&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b920e7b5b6628714e49e09ff5521182a68056915&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5273256" author="xgen-buildbaron-user" created="Wed, 15 Mar 2023 04:31:16 +0000"  >&lt;p&gt;Ticket re-opened due to revert. &lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_mongo_master_enterprise_windows_all_feature_flags_required_display_sharding_auth_audit_d21348f684ad55f39ff1fab4bdfeea4e7b1d3128_23_03_14_16_01_18&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;sharding_auth_audit&lt;/a&gt; began a consistent failure of jstests\sharding\analyze_shard_key\query_analysis_sample_counters_reporting.js&lt;/p&gt;</comment>
                            <comment id="5273253" author="xgen-internal-githook" created="Wed, 15 Mar 2023 04:29:13 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;auto-revert-processor&apos;, &apos;email&apos;: &apos;dev-prod-dag@mongodb.com&apos;, &apos;username&apos;: &apos;&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-74755&quot; title=&quot;Collection sample counters not removed atomically with sample reconfiguration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-74755&quot;&gt;&lt;del&gt;SERVER-74755&lt;/del&gt;&lt;/a&gt; Make QueryAnalysisSampleCounters refresh config atomic with sampler refresh&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit d21348f684ad55f39ff1fab4bdfeea4e7b1d3128.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6e25f79b5a12ebcb768297e15bf5cd9775a48d48&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6e25f79b5a12ebcb768297e15bf5cd9775a48d48&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5271554" author="xgen-internal-githook" created="Tue, 14 Mar 2023 16:01:23 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Israel Hsu&apos;, &apos;email&apos;: &apos;israel.hsu@mongodb.com&apos;, &apos;username&apos;: &apos;israelhsu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-74755&quot; title=&quot;Collection sample counters not removed atomically with sample reconfiguration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-74755&quot;&gt;&lt;del&gt;SERVER-74755&lt;/del&gt;&lt;/a&gt; Make QueryAnalysisSampleCounters refresh config atomic with sampler refresh&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d21348f684ad55f39ff1fab4bdfeea4e7b1d3128&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d21348f684ad55f39ff1fab4bdfeea4e7b1d3128&lt;/a&gt;&lt;/p&gt;</comment>
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