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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-45763] Optimize extractKeyFast() fallback path</title>
                <link>https://jira.mongodb.org/browse/SERVER-45763</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The SortKeyGenerator::extractKeyFast checks to see if a path in the sort key traverses any array, and if an array is found, it returns failure so that the caller can use the slower path that supports array traversal.&lt;/p&gt;

&lt;p&gt;Simply checking the array path, though, triggers a conversion for fields in the input Document, so that they can reside in the Document&apos;s Value cash. That conversion is expensive if there are large documents or arrays along the path, and all that work gets thrown away if an array is encountered anywhere along the path: the &quot;slow&quot; path operates on the underlying BSON and gets no benefit from the cached Values.&lt;/p&gt;

&lt;p&gt;We could speed up some queries if we had a way to perform the check in extractKeyFastPath() without doing any BSON -&amp;gt; Value conversions.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1113812">SERVER-45763</key>
            <summary>Optimize extractKeyFast() fallback path</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="ian.boros@mongodb.com">Ian Boros</assignee>
                                    <reporter username="justin.seyster@mongodb.com">Justin Seyster</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Fri, 24 Jan 2020 18:19:24 +0000</created>
                <updated>Sun, 29 Oct 2023 22:12:55 +0000</updated>
                            <resolved>Wed, 1 Apr 2020 02:43:09 +0000</resolved>
                                                    <fixVersion>4.4.0-rc0</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="3023425" author="xgen-internal-githook" created="Thu, 2 Apr 2020 16:02:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45763&quot; title=&quot;Optimize extractKeyFast() fallback path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45763&quot;&gt;&lt;del&gt;SERVER-45763&lt;/del&gt;&lt;/a&gt; optimize sort key generation&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 5557279e9ca9c78fbeb1026fc1a48a5c7c334b71)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/41710b8842747067e82f1ac3cc46acd4fab75008&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/41710b8842747067e82f1ac3cc46acd4fab75008&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3020322" author="xgen-internal-githook" created="Wed, 1 Apr 2020 01:29:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45763&quot; title=&quot;Optimize extractKeyFast() fallback path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45763&quot;&gt;&lt;del&gt;SERVER-45763&lt;/del&gt;&lt;/a&gt; optimize sort key generation&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5557279e9ca9c78fbeb1026fc1a48a5c7c334b71&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5557279e9ca9c78fbeb1026fc1a48a5c7c334b71&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="969166">SERVER-43993</issuekey>
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