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    <title>MongoDB Jira</title>
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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-43693] Reduce probability of collMods in create_index_background_unique_collmod* workloads</title>
                <link>https://jira.mongodb.org/browse/SERVER-43693</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/mongodb/mongo/blob/54559472f7d34a31283bc23a409b9bb8279ba054/jstests/concurrency/fsm_workloads/create_index_background_unique_collmod.js&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;create_index_background_unique_collmod.js&lt;/a&gt; and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/54559472f7d34a31283bc23a409b9bb8279ba054/jstests/concurrency/fsm_workloads/create_index_background_unique_collmod_capped.js&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;create_index_background_unique_collmod_capped.js&lt;/a&gt; workloads (added in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41974&quot; title=&quot;Create create_index_background_unique.js workload that performs unique index upgrade collMods&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41974&quot;&gt;&lt;del&gt;SERVER-41974&lt;/del&gt;&lt;/a&gt;) presently do a large number of empty collMod commands in order to trigger the unique index upgrade code path during unique index creation and deletion.&lt;/p&gt;

&lt;p&gt;Too many of these collMods in succession can starve resources and cause the test to time out.&lt;/p&gt;

&lt;p&gt;We can address this problem by reducing the probability of the collMod executing during the workload.&lt;/p&gt;</description>
                <environment></environment>
        <key id="943573">SERVER-43693</key>
            <summary>Reduce probability of collMods in create_index_background_unique_collmod* workloads</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="maria.vankeulen@mongodb.com">Maria van Keulen</assignee>
                                    <reporter username="maria.vankeulen@mongodb.com">Maria van Keulen</reporter>
                        <labels>
                    </labels>
                <created>Fri, 27 Sep 2019 18:27:07 +0000</created>
                <updated>Sun, 29 Oct 2023 22:16:43 +0000</updated>
                            <resolved>Thu, 21 Nov 2019 16:00:52 +0000</resolved>
                                                    <fixVersion>4.2.2</fixVersion>
                                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2555278" author="xgen-internal-githook" created="Wed, 20 Nov 2019 21:08:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;maria.vankeulen@mongodb.com&apos;, &apos;name&apos;: &apos;Maria van Keulen&apos;, &apos;username&apos;: &apos;mvankeulen94&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43693&quot; title=&quot;Reduce probability of collMods in create_index_background_unique_collmod* workloads&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43693&quot;&gt;&lt;del&gt;SERVER-43693&lt;/del&gt;&lt;/a&gt; Reduce probability of unique index upgrade collMod in tests&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ff955b4a97043dab1f562b3c6c77b10965f4a8c7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ff955b4a97043dab1f562b3c6c77b10965f4a8c7&lt;/a&gt;&lt;/p&gt;</comment>
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