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    <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>[DOCS-13686] Investigate changes in SERVER-48529: Delete unused PlanCache::feedback() mechanism</title>
                <link>https://jira.mongodb.org/browse/DOCS-13686</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #c2d2c2;&quot;&gt;
&lt;p&gt;    This patch removes the setParameter &lt;tt&gt;internalQueryCacheFeedbacksStored&lt;/tt&gt;. I think this parameter was pretty obscure and unlikely to be ever explicitly configured, but I&apos;m notifying downstream teams just in case. The parameter does nothing in 4.4 and has been removed in 4.6. Any uses of this in command line parameters or config files should simply be removed. &lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    In previous versions, the &lt;tt&gt;PlanCache&lt;/tt&gt; tracked the score associated with a&#160;cache entry for several historical executions of the cached plan. These scores were then surfaced via the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/planCacheListPlans/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;planCacheListPlans&lt;/a&gt; comment, which was deprecated in 4.2 and removed in 4.4. The number of historical executions tracked was controlled by the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/29e2a6737ef643bf663579c5c7b378a5c383c9b8/src/mongo/db/query/query_knobs.idl#L101-L108&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;internalQueryCacheFeedbacksStored&lt;/a&gt; setParameter.&lt;/p&gt;

&lt;p&gt;Since this information is no longer surfaced by the replacement for &lt;tt&gt;planCacheListPlans&lt;/tt&gt; (the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/aggregation/planCacheStats/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;$planCacheStats&lt;/a&gt; agg stage), the code for tracking this &quot;feedback&quot; information can be deleted. The &lt;tt&gt;internalQueryCacheFeedbacksStored&lt;/tt&gt; setParameter can also be deleted.&lt;/p&gt;


&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="1369708">DOCS-13686</key>
            <summary>Investigate changes in SERVER-48529: Delete unused PlanCache::feedback() mechanism</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="andrew.feierabend@mongodb.com">Andrew Feierabend</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                    </labels>
                <created>Tue, 2 Jun 2020 18:54:57 +0000</created>
                <updated>Mon, 13 Nov 2023 18:04:42 +0000</updated>
                            <resolved>Mon, 14 Jun 2021 19:43:38 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                    <fixVersion>4.4.3</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
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