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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-73638] Optimise the initial content creation of config.placementHistory</title>
                <link>https://jira.mongodb.org/browse/SERVER-73638</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70687&quot; title=&quot;Set the initial content of config.placementHistory on FCV upgrade&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70687&quot;&gt;&lt;del&gt;SERVER-70687&lt;/del&gt;&lt;/a&gt; added to the FCV upgrade a new &lt;a href=&quot;https://github.com/10gen/mongo/blob/31d321bb25d2992da400e3fcc8ab73419216e266/src/mongo/db/s/config/sharding_catalog_manager.cpp#L352-L512&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;aggregation pipeline&lt;/a&gt; that retrieves and persists placement information about each namespace of the cluster based on the content of &lt;tt&gt;config.databases&lt;/tt&gt;, &lt;tt&gt;content.collections&lt;/tt&gt; and &lt;tt&gt;content.chunks&lt;/tt&gt;.&lt;/p&gt;

&lt;p&gt;Given the size of such collections, an optimal execution of the pipeline has to be guaranteed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2253625">SERVER-73638</key>
            <summary>Optimise the initial content creation of config.placementHistory</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="enrico.golfieri@mongodb.com">Enrico Golfieri</assignee>
                                    <reporter username="paolo.polato@mongodb.com">Paolo Polato</reporter>
                        <labels>
                    </labels>
                <created>Mon, 6 Feb 2023 14:16:45 +0000</created>
                <updated>Sun, 29 Oct 2023 21:26:53 +0000</updated>
                            <resolved>Tue, 21 Feb 2023 17:18:14 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5214341" author="xgen-internal-githook" created="Mon, 20 Feb 2023 16:32:36 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Enrico Golfieri&apos;, &apos;email&apos;: &apos;enrico.golfieri@mongodb.com&apos;, &apos;username&apos;: &apos;enricogolfieri&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-73638&quot; title=&quot;Optimise the initial content creation of config.placementHistory&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-73638&quot;&gt;&lt;del&gt;SERVER-73638&lt;/del&gt;&lt;/a&gt; Optimise the initial content creation of config.placementHistory&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2883a9c7ebb5afa50fa71cdb192c3adb83e8aa88&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2883a9c7ebb5afa50fa71cdb192c3adb83e8aa88&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2244312">SERVER-73343</issuekey>
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