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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-61196] Investigate simplifications to BucketCatalog concurrency model</title>
                <link>https://jira.mongodb.org/browse/SERVER-61196</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The fine-grained locking hierarchy currently used in the BucketCatalog is difficult to reason about and has led to several bugs. We are hoping to simplify this without sacrificing too many of the performance gains we achieved by implementing the fine-grained locking in the first place.&lt;/p&gt;

&lt;p&gt;We can consider any simplifications, but one might be worth checking first: shard the catalog by bucket metadata. Each shard can be protected by a simple mutex. Much of the work on the insert path could be done outside these mutexes, and operations on unrelated buckets would be unlikely to block each other.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1916322">SERVER-61196</key>
            <summary>Investigate simplifications to BucketCatalog concurrency model</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="9">Done</resolution>
                                        <assignee username="dan.larkin-york@mongodb.com">Dan Larkin-York</assignee>
                                    <reporter username="dan.larkin-york@mongodb.com">Dan Larkin-York</reporter>
                        <labels>
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                <created>Tue, 2 Nov 2021 17:52:13 +0000</created>
                <updated>Fri, 21 Jan 2022 14:17:43 +0000</updated>
                            <resolved>Fri, 21 Jan 2022 14:17:43 +0000</resolved>
                                                                                        <votes>0</votes>
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                                                                                                                <comments>
                            <comment id="4305526" author="xgen-internal-githook" created="Fri, 21 Jan 2022 14:11:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dan Larkin-York&apos;, &apos;email&apos;: &apos;dan.larkin-york@mongodb.com&apos;, &apos;username&apos;: &apos;dhly-etc&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61196&quot; title=&quot;Investigate simplifications to BucketCatalog concurrency model&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61196&quot;&gt;&lt;del&gt;SERVER-61196&lt;/del&gt;&lt;/a&gt; Simplify BucketCatalog concurrency model&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3f28a62b0911515acd027d501074a13ad7e4afb5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3f28a62b0911515acd027d501074a13ad7e4afb5&lt;/a&gt;&lt;/p&gt;</comment>
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