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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-50505] Make the CatalogCache return ChunkManager(s) directly</title>
                <link>https://jira.mongodb.org/browse/SERVER-50505</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, the &lt;tt&gt;CatalogCache&lt;/tt&gt; returns an intermediate &quot;combo&quot; object called &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5633aae06dbb46d2b98af36a9e6b79a46fc37ec2/src/mongo/s/catalog_cache.h#L261&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;CachedCollectionRoutingInfo&lt;/tt&gt;&lt;/a&gt; for its collection routing methods. We should go in a direction where the &lt;tt&gt;ChunkManager&lt;/tt&gt; is the only thing used for routing, so we should make the &lt;tt&gt;CatalogCache&lt;/tt&gt; return it directly instead.&lt;/p&gt;

&lt;p&gt;As a follow-up step, we should remove all places which differentiate between sharded and unsharded collections and push that logic in the &lt;tt&gt;ChunkManager&lt;/tt&gt;&apos;s routing methods. That way when we make all collections be sharding-aware, we will only have to make changes there.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1451155">SERVER-50505</key>
            <summary>Make the CatalogCache return ChunkManager(s) directly</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="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</reporter>
                        <labels>
                            <label>PM-1645-Milestone-2</label>
                    </labels>
                <created>Tue, 25 Aug 2020 06:35:54 +0000</created>
                <updated>Sun, 29 Oct 2023 22:04:04 +0000</updated>
                            <resolved>Tue, 1 Sep 2020 10:54:37 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3369441" author="xgen-internal-githook" created="Tue, 1 Sep 2020 10:51:02 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kaloian Manassiev&apos;, &apos;email&apos;: &apos;kaloian.manassiev@mongodb.com&apos;, &apos;username&apos;: &apos;kaloianm&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-50505&quot; title=&quot;Make the CatalogCache return ChunkManager(s) directly&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-50505&quot;&gt;&lt;del&gt;SERVER-50505&lt;/del&gt;&lt;/a&gt; Make the CatalogCache return ChunkManager(s) directly&lt;/p&gt;

&lt;p&gt;... instead of returning the intermediate CachedCollectionRoutingInfo&lt;br/&gt;
class. The ChunkManager should be the only class used for routing.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9cb82d2e8680717d3002459ba5fdb16036183a17&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9cb82d2e8680717d3002459ba5fdb16036183a17&lt;/a&gt;&lt;/p&gt;</comment>
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