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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-72615] Compute cardinality estimates for statistics computed with sampling</title>
                <link>https://jira.mongodb.org/browse/SERVER-72615</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;CE should use the sample rate to multiply the final estimate. Let&apos;s say if sample rate 0.5. then we should multiply each estimate by 2.&lt;/p&gt;

&lt;p&gt;All per-type counters have to be scaled as well, not just the histogram-based estimates.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2227282">SERVER-72615</key>
            <summary>Compute cardinality estimates for statistics computed with sampling</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="alya.berciu@mongodb.com">Alya Berciu</assignee>
                                    <reporter username="misha.tyulenev@mongodb.com">Misha Tyulenev</reporter>
                        <labels>
                    </labels>
                <created>Sun, 8 Jan 2023 20:54:47 +0000</created>
                <updated>Sun, 29 Oct 2023 21:28:33 +0000</updated>
                            <resolved>Tue, 24 Jan 2023 17:16:49 +0000</resolved>
                                                    <fixVersion>6.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5140589" author="xgen-internal-githook" created="Wed, 25 Jan 2023 18:42:46 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Alya Berciu&apos;, &apos;email&apos;: &apos;alya.berciu@mongodb.com&apos;, &apos;username&apos;: &apos;alyacb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72615&quot; title=&quot;Compute cardinality estimates for statistics computed with sampling&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72615&quot;&gt;&lt;del&gt;SERVER-72615&lt;/del&gt;&lt;/a&gt; Fix sample histogram golden test&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/19d71c2910c2ee4796217c52e03d404451e84668&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/19d71c2910c2ee4796217c52e03d404451e84668&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5136870" author="xgen-internal-githook" created="Tue, 24 Jan 2023 17:13:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Alya Berciu&apos;, &apos;email&apos;: &apos;alya.berciu@mongodb.com&apos;, &apos;username&apos;: &apos;alyacb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72615&quot; title=&quot;Compute cardinality estimates for statistics computed with sampling&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72615&quot;&gt;&lt;del&gt;SERVER-72615&lt;/del&gt;&lt;/a&gt; Compute CE for sampled histograms&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1acba68fc3cb501df6e9a23f1f041e1043edc101&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1acba68fc3cb501df6e9a23f1f041e1043edc101&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2227281">SERVER-72614</issuekey>
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