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    <description>This file is an XML representation of an issue</description>
    <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-66863] Add a new Global Index Cache in the Router Role</title>
                <link>https://jira.mongodb.org/browse/SERVER-66863</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The collection sharding state API must be extended to also obtain the index metadata information. In order to do this, we need to implement an IndexCache, based on the &lt;a href=&quot;https://github.com/10gen/mongo/blob/6220cd6acadf334edee5168e4729c79c85327345/src/mongo/util/read_through_cache.h&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ReadThroughCache&lt;/a&gt; (like the &lt;a href=&quot;https://github.com/10gen/mongo/blob/6220cd6acadf334edee5168e4729c79c85327345/src/mongo/s/catalog_cache.h#L278&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;DatabaseCache&lt;/a&gt; or the &lt;a href=&quot;https://github.com/10gen/mongo/blob/6220cd6acadf334edee5168e4729c79c85327345/src/mongo/s/catalog_cache.h#L294&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;CollectionCache&lt;/a&gt;), that will use the IndexVersion component as a base time to advance it.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2058048">SERVER-66863</key>
            <summary>Add a new Global Index Cache in the Router Role</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="allison.easton@mongodb.com">Allison Easton</assignee>
                                    <reporter username="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</reporter>
                        <labels>
                            <label>PM-2583-Milestone-2</label>
                    </labels>
                <created>Mon, 30 May 2022 17:48:13 +0000</created>
                <updated>Sun, 29 Oct 2023 21:37:34 +0000</updated>
                            <resolved>Tue, 4 Oct 2022 07:34:59 +0000</resolved>
                                                    <fixVersion>6.2.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4875501" author="xgen-internal-githook" created="Tue, 4 Oct 2022 07:32:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Allison Easton&apos;, &apos;email&apos;: &apos;allison.easton@mongodb.com&apos;, &apos;username&apos;: &apos;allisoneaston&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66863&quot; title=&quot;Add a new Global Index Cache in the Router Role&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66863&quot;&gt;&lt;del&gt;SERVER-66863&lt;/del&gt;&lt;/a&gt; Add a new Global Index Cache in the Router Role&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c795402c9b2bb23ea5887ae2e92b030e4953472c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c795402c9b2bb23ea5887ae2e92b030e4953472c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4606510" author="marcos.grillo" created="Fri, 10 Jun 2022 09:45:28 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kaloian.manassiev%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;kaloian.manassiev@mongodb.com&quot;&gt;kaloian.manassiev@mongodb.com&lt;/a&gt; I talked to &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=max.hirschhorn%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;max.hirschhorn@mongodb.com&quot;&gt;max.hirschhorn@mongodb.com&lt;/a&gt; and they will need the router role changes.&lt;/p&gt;</comment>
                            <comment id="4604153" author="kaloian.manassiev" created="Thu, 9 Jun 2022 10:46:22 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=marcos.grillo%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;marcos.grillo@mongodb.com&quot;&gt;marcos.grillo@mongodb.com&lt;/a&gt;, I thought that at the first phase of the project (the one that is required by Global Index Maintenance) we will not have an index cache and instead we will use a transaction to update the Shard and the CSRS catalogs. Why do we need one now?&lt;/p&gt;

&lt;p&gt;EDIT: I just saw milestone 2 in the labels, but can you please confirm?&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="2115996">SERVER-68896</issuekey>
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            <issuekey id="2058063">SERVER-66865</issuekey>
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            <issuekey id="2214034">SERVER-72188</issuekey>
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