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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-78105] Optimize the aggregation pipeline used by analyzeShardKey command to calculate cardinality and frequency</title>
                <link>https://jira.mongodb.org/browse/SERVER-78105</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;According to the experiments in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-68763&quot; title=&quot;Add performance testing to measure the performance impact of running the analyzeShardKey command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-68763&quot;&gt;&lt;del&gt;SERVER-68763&lt;/del&gt;&lt;/a&gt;, replacing the $setWindowFields+$limit stages with a $group stage with $topN decreased the runtime of the step to calculate the cardinality and frequency for a non-unique shard key index by about 20%. &lt;/p&gt;</description>
                <environment></environment>
        <key id="2368471">SERVER-78105</key>
            <summary>Optimize the aggregation pipeline used by analyzeShardKey command to calculate cardinality and frequency</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="cheahuychou.mao@mongodb.com">Cheahuychou Mao</assignee>
                                    <reporter username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</reporter>
                        <labels>
                    </labels>
                <created>Wed, 14 Jun 2023 19:50:07 +0000</created>
                <updated>Sun, 29 Oct 2023 21:20:02 +0000</updated>
                            <resolved>Thu, 15 Jun 2023 22:54:37 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.0-rc5</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5503865" author="xgen-internal-githook" created="Fri, 16 Jun 2023 02:22:44 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Cheahuychou Mao&apos;, &apos;email&apos;: &apos;mao.cheahuychou@gmail.com&apos;, &apos;username&apos;: &apos;cheahuychou&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78105&quot; title=&quot;Optimize the aggregation pipeline used by analyzeShardKey command to calculate cardinality and frequency&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78105&quot;&gt;&lt;del&gt;SERVER-78105&lt;/del&gt;&lt;/a&gt; Optimize the aggregation pipeline used by analyzeShardKey command to calculate cardinality and frequency&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 89ee000ed1c70df1cb9c0bd70ea0d0e0bc3d93ec)&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7d177c9d90b5a5d9d3c0db6fbbe808c6b539ffd5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7d177c9d90b5a5d9d3c0db6fbbe808c6b539ffd5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5503484" author="xgen-internal-githook" created="Thu, 15 Jun 2023 22:37:18 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Cheahuychou Mao&apos;, &apos;email&apos;: &apos;mao.cheahuychou@gmail.com&apos;, &apos;username&apos;: &apos;cheahuychou&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78105&quot; title=&quot;Optimize the aggregation pipeline used by analyzeShardKey command to calculate cardinality and frequency&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78105&quot;&gt;&lt;del&gt;SERVER-78105&lt;/del&gt;&lt;/a&gt; Optimize the aggregation pipeline used by analyzeShardKey command to calculate cardinality and frequency&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/89ee000ed1c70df1cb9c0bd70ea0d0e0bc3d93ec&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/89ee000ed1c70df1cb9c0bd70ea0d0e0bc3d93ec&lt;/a&gt;&lt;/p&gt;</comment>
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