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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-34454] Consider including the EOF bonus in the plan cache score</title>
                <link>https://jira.mongodb.org/browse/SERVER-34454</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, EOF bonuses are stripped from plan scores prior to being saved in the plan cache.  &lt;a href=&quot;https://github.com/mongodb/mongo/blob/8e3271aaf22106853bf36429cfcee39ed6055f35/src/mongo/db/query/plan_ranker.h#L393-L411&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;This comment&lt;/a&gt; implies that the logic relates to plan eviction.  This seems to no longer apply due to the &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15225&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;replanning mechanism that was introduced in &lt;tt&gt;3.0&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This may result in &lt;tt&gt;getPlansByQuery()&lt;/tt&gt; output where the first plan listed (the winning/cached plan) has a lower score than subsequent entries. &lt;/p&gt;</description>
                <environment></environment>
        <key id="526392">SERVER-34454</key>
            <summary>Consider including the EOF bonus in the plan cache score</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="timour.katchaounov@mongodb.com">Timour Katchaounov</assignee>
                                    <reporter username="christopher.harris@mongodb.com">Chris Harris</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Fri, 13 Apr 2018 04:32:28 +0000</created>
                <updated>Sun, 29 Oct 2023 22:32:45 +0000</updated>
                            <resolved>Tue, 9 Feb 2021 09:37:14 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="3606183" author="xgen-internal-githook" created="Tue, 9 Feb 2021 08:22:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Timour Katchaounov&apos;, &apos;email&apos;: &apos;timour.katchaounov@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34454&quot; title=&quot;Consider including the EOF bonus in the plan cache score&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34454&quot;&gt;&lt;del&gt;SERVER-34454&lt;/del&gt;&lt;/a&gt; Consider including the EOF bonus in the plan cache score&lt;/p&gt;

&lt;p&gt;Removes the subtraction of the eofBonus from the final score,&lt;br/&gt;
thus including the eofBonus in the plan cache score.&lt;/p&gt;

&lt;p&gt;This is safe to do because the cached score is used only for logging&lt;br/&gt;
purposes and no decision is made base on the score outside of&lt;br/&gt;
plan_ranker::pickBestPlan&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/194975733a8289247e972a2d6a2d0e8ffd25bad3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/194975733a8289247e972a2d6a2d0e8ffd25bad3&lt;/a&gt;&lt;/p&gt;</comment>
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