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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-82242]  Implement QuerySolution hash and store in plan cache</title>
                <link>https://jira.mongodb.org/browse/SERVER-82242</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;As a prerequisite to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82238&quot; title=&quot;Add field to explain to indicate if winning and rejected plans are cached&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82238&quot;&gt;&lt;del&gt;SERVER-82238&lt;/del&gt;&lt;/a&gt;, we need a way to check if the QuerySolution that lead to a cache entry matches one that we consider during an explain. We will hash the QuerySolution, store the hash in the plan cache, and when we run explain we see which plan hash matches the cached hash.&lt;/p&gt;

&lt;p&gt;For this ticket, we will implement the hash of the QuerySolution.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2475721">SERVER-82242</key>
            <summary> Implement QuerySolution hash and store in plan cache</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="matt.boros@mongodb.com">Matt Boros</assignee>
                                    <reporter username="matt.boros@mongodb.com">Matt Boros</reporter>
                        <labels>
                    </labels>
                <created>Mon, 16 Oct 2023 19:55:49 +0000</created>
                <updated>Sat, 9 Dec 2023 02:42:14 +0000</updated>
                            <resolved>Thu, 7 Dec 2023 15:35:47 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="5937697" author="xgen-internal-githook" created="Sat, 9 Dec 2023 02:42:14 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Matthew Boros&apos;, &apos;email&apos;: &apos;matt.boros@mongodb.com&apos;, &apos;username&apos;: &apos;mattBoros&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82242&quot; title=&quot; Implement QuerySolution hash and store in plan cache&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82242&quot;&gt;&lt;del&gt;SERVER-82242&lt;/del&gt;&lt;/a&gt; Remove check for duplicate plans in QueryPlanner::plan&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: ac14e5a9698aa21ee6441762f7733e5f6daaaf0d&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6099c30cf9ae6f1e4f7f214b95111e95227bf092&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6099c30cf9ae6f1e4f7f214b95111e95227bf092&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5931880" author="xgen-internal-githook" created="Thu, 7 Dec 2023 06:05:25 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Matthew Boros&apos;, &apos;email&apos;: &apos;matt.boros@mongodb.com&apos;, &apos;username&apos;: &apos;mattBoros&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82242&quot; title=&quot; Implement QuerySolution hash and store in plan cache&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82242&quot;&gt;&lt;del&gt;SERVER-82242&lt;/del&gt;&lt;/a&gt; implement QuerySolution hash&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 4d1dd670d245ae2f4e2a7a9e735ef4b6a934c754&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e20dbe32b459832b232bca3995c5f0daa8902834&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e20dbe32b459832b232bca3995c5f0daa8902834&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2499638">SERVER-83234</issuekey>
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