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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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<item>
            <title>[SERVER-79854] [CQF] Omit shard filtering stage when query has an equality predicate on the shard key</title>
                <link>https://jira.mongodb.org/browse/SERVER-79854</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We can omit shard filtering when the query contains an equality predicate on all fields of the shard key because all documents are guaranteed to be owned by this shard.&lt;/p&gt;

&lt;p&gt;We can modify the implementer for SargableNode to perform this optimization when the node is being optimized with RemoveOrphansRequirement.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2412329">SERVER-79854</key>
            <summary>[CQF] Omit shard filtering stage when query has an equality predicate on the shard key</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="13201">Fixed</resolution>
                                        <assignee username="ben.shteinfeld@mongodb.com">Ben Shteinfeld</assignee>
                                    <reporter username="ben.shteinfeld@mongodb.com">Ben Shteinfeld</reporter>
                        <labels>
                    </labels>
                <created>Tue, 8 Aug 2023 18:35:00 +0000</created>
                <updated>Sun, 29 Oct 2023 21:17:47 +0000</updated>
                            <resolved>Wed, 6 Sep 2023 18:57:13 +0000</resolved>
                                                    <fixVersion>7.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5684208" author="xgen-internal-githook" created="Wed, 6 Sep 2023 18:40:51 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Ben Shteinfeld&apos;, &apos;email&apos;: &apos;ben.shteinfeld@mongodb.com&apos;, &apos;username&apos;: &apos;bshteinfeld&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-79854&quot; title=&quot;[CQF] Omit shard filtering stage when query has an equality predicate on the shard key&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-79854&quot;&gt;&lt;del&gt;SERVER-79854&lt;/del&gt;&lt;/a&gt; &lt;span class=&quot;error&quot;&gt;&amp;#91;CQF&amp;#93;&lt;/span&gt; Omit shard filter on equality to shard key&lt;/p&gt;

&lt;p&gt;Implement the classic engine optimization which avoids a shard filter stage when the predicate contains an exact equality on all components of the shard key in Bonsai.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/73822b5156502248e29dac1410fd3e48c1a68657&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/73822b5156502248e29dac1410fd3e48c1a68657&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2379551">SERVER-78507</issuekey>
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            <issuekey id="2435767">SERVER-80824</issuekey>
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