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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-66757] [5.0] Quadratic behavior initializing databases during startup</title>
                <link>https://jira.mongodb.org/browse/SERVER-66757</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Startup recovery is quadratic in the number of databases and collections due to the copy-on-write semantics happening &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0a91ccf2b045a521acd6c6213e44202900e502a3/src/mongo/db/catalog/database_impl.cpp#L175-L184&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;. Every time a database is initialized, we rewrite the entire collection catalog.&lt;/p&gt;

&lt;p&gt;This was fixed in 6.0 with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65313&quot; title=&quot;Use BatchedCollectionCatalogWriter during startup recovery&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65313&quot;&gt;&lt;del&gt;SERVER-65313&lt;/del&gt;&lt;/a&gt;, but it is dependent on some changes that would be tricky to backport. We should implement a simple change for the 5.0 branch.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2055004">SERVER-66757</key>
            <summary>[5.0] Quadratic behavior initializing databases during startup</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="3">Duplicate</resolution>
                                        <assignee username="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Wed, 25 May 2022 16:11:14 +0000</created>
                <updated>Thu, 8 Jun 2023 14:58:42 +0000</updated>
                            <resolved>Thu, 9 Jun 2022 13:12:13 +0000</resolved>
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