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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-21206] ShardRegistry::_lookup should be an unordered_map</title>
                <link>https://jira.mongodb.org/browse/SERVER-21206</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently it is an ordered map, although the ordering is not used except when calling ShardRegistry::toBSON().&lt;/p&gt;

&lt;p&gt;Lookups on this map are done on the egress command path, and getShardNoReload (which calls _findUsingLookUp) shows up as a source of latency in vTune.&lt;/p&gt;</description>
                <environment></environment>
        <key id="236880">SERVER-21206</key>
            <summary>ShardRegistry::_lookup should be an unordered_map</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="9">Done</resolution>
                                        <assignee username="adam.midvidy">Adam Midvidy</assignee>
                                    <reporter username="adam.midvidy">Adam Midvidy</reporter>
                        <labels>
                    </labels>
                <created>Thu, 29 Oct 2015 18:28:36 +0000</created>
                <updated>Wed, 4 Nov 2015 16:16:16 +0000</updated>
                            <resolved>Fri, 30 Oct 2015 14:56:46 +0000</resolved>
                                                    <fixVersion>3.2.0-rc2</fixVersion>
                                    <component>Performance</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1075289" author="xgen-internal-githook" created="Fri, 30 Oct 2015 14:56:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;amidvidy&apos;, u&apos;name&apos;: u&apos;Adam Midvidy&apos;, u&apos;email&apos;: u&apos;amidvidy@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21206&quot; title=&quot;ShardRegistry::_lookup should be an unordered_map&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21206&quot;&gt;&lt;del&gt;SERVER-21206&lt;/del&gt;&lt;/a&gt; make ShardRegistry::_lookup an unordered_map&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ede90e4eb46e7301b7e01a45c595a28efe63d506&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ede90e4eb46e7301b7e01a45c595a28efe63d506&lt;/a&gt;&lt;/p&gt;</comment>
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                            <attachment id="96176" name="shardfind.png" size="26754" author="adam.midvidy" created="Thu, 29 Oct 2015 18:30:00 +0000"/>
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