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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[COMPASS-7587] Investigate changes in SERVER-75678: Consider adding a plan cache serverStatus counter for queries which are not eligible for caching</title>
                <link>https://jira.mongodb.org/browse/COMPASS-7587</link>
                <project id="13182" key="COMPASS">Compass </project>
                    <description>    &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;Original Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;    We now differentiate from plan cache misses and skips (queries whose plan is never even attempted to cache)&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    This is a follow up ticket from &lt;a href=&quot;https://github.com/10gen/mongo/pull/11732#top&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;SERVER-70025&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Currently we only count cache plan cache hits and misses, regardless of the query type. That is, we expect a plan for the given query to be in the cache, and as such can be recovered from the cache, or missed from the cache, and needs to be replanned.&lt;/p&gt;

&lt;p&gt;However, there is a difference between &quot;didn&apos;t use cache because there wasn&apos;t a cache entry&quot; and &quot;didn&apos;t use cache because this query is ineligible for caching&quot;.&#160;&lt;/p&gt;

&lt;p&gt;We may want to consider adding a third counter (in additional to &quot;hits&quot; and &quot;misses&quot;) to account for this difference.&#160;&lt;/p&gt;
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                <environment></environment>
        <key id="2551013">COMPASS-7587</key>
            <summary>Investigate changes in SERVER-75678: Consider adding a plan cache serverStatus counter for queries which are not eligible for caching</summary>
                <type id="10501" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Investigation</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
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                <created>Fri, 19 Jan 2024 09:53:08 +0000</created>
                <updated>Wed, 7 Feb 2024 14:51:37 +0000</updated>
                            <resolved>Wed, 7 Feb 2024 14:51:37 +0000</resolved>
                                                    <fixVersion>No version</fixVersion>
                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="6075128" author="jessica.sigafoos" created="Wed, 7 Feb 2024 14:51:37 +0000"  >&lt;p&gt;No action required from the DevTools team&lt;/p&gt;</comment>
                            <comment id="6025044" author="dbeng-pm-bot" created="Fri, 19 Jan 2024 09:53:15 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75678&quot; title=&quot;Consider adding a plan cache serverStatus counter for queries which are not eligible for caching&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75678&quot;&gt;&lt;del&gt;SERVER-75678&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
7.3.0-rc0&lt;/p&gt;</comment>
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