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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-55942] Avoid sorting metadata object in BucketCatalog::insert by storing multiple entries in _openBuckets</title>
                <link>https://jira.mongodb.org/browse/SERVER-55942</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Sorting the metadata in BucketCatalog::insert can be an quite expensive operation. This is done so we can perform binary comparison to lookup bucket independently of user provided field order.&lt;/p&gt;

&lt;p&gt;As an alternative approach that may perform better is to store multiple entries in the _openBuckets hash map that point to the same bucket to handle different sort orders. We can lazily normalize and retry the lookup if the first lookup failed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1675077">SERVER-55942</key>
            <summary>Avoid sorting metadata object in BucketCatalog::insert by storing multiple entries in _openBuckets</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="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Thu, 8 Apr 2021 19:00:47 +0000</created>
                <updated>Sun, 29 Oct 2023 21:55:08 +0000</updated>
                            <resolved>Tue, 27 Apr 2021 16:52:22 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3741631" author="xgen-internal-githook" created="Tue, 27 Apr 2021 16:25:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55942&quot; title=&quot;Avoid sorting metadata object in BucketCatalog::insert by storing multiple entries in _openBuckets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55942&quot;&gt;&lt;del&gt;SERVER-55942&lt;/del&gt;&lt;/a&gt; Store un-normalized bucket keys in the open buckets map.&lt;/p&gt;

&lt;p&gt;Lazily normalize key on insert when un-normalized is not found.&lt;br/&gt;
Also use precomputed bucket hashes when modifying the bucket catalog under exclusive lock.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/846e0a2acf38a7c1e53b25680a4982b575bfc919&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/846e0a2acf38a7c1e53b25680a4982b575bfc919&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1682668">SERVER-56157</issuekey>
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