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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-27704] Chunk metadata cache updates on the primary must be written to config.chunks.ns</title>
                <link>https://jira.mongodb.org/browse/SERVER-27704</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Shard primaries refresh their chunk metadata by querying the config server for new metadata, and then creating and setting a new CollectionMetadata object. Usually the new CollectionMetadata object is based off of the old CollectionMetadata object, but if the CollectionMetadata was previously cleared then the query will retrieve all the chunk metadata and make an entirely new CollectionMetadata object with the results. The ConfigDiffTracker::calculateConfigDiff function applies the new chunk metadata queried from the config server to the new CollectionMetadata object.&lt;/p&gt;

&lt;p&gt;From now on, the primary must read from and write to admin.chunks. In-memory cached chunk metadata manipulations, via CollectionMetadata or ConfigDiffTracker methods, should correspondingly do writes to the admin.chunks collection.&lt;/p&gt;</description>
                <environment></environment>
        <key id="346290">SERVER-27704</key>
            <summary>Chunk metadata cache updates on the primary must be written to config.chunks.ns</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="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                    </labels>
                <created>Tue, 17 Jan 2017 15:59:39 +0000</created>
                <updated>Wed, 5 Apr 2017 11:42:23 +0000</updated>
                            <resolved>Wed, 1 Mar 2017 16:33:07 +0000</resolved>
                                                    <fixVersion>3.5.4</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1513377" author="xgen-internal-githook" created="Wed, 1 Mar 2017 16:26:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;DiannaHohensee&apos;, u&apos;name&apos;: u&apos;Dianna Hohensee&apos;, u&apos;email&apos;: u&apos;dianna.hohensee@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27704&quot; title=&quot;Chunk metadata cache updates on the primary must be written to config.chunks.ns&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27704&quot;&gt;&lt;del&gt;SERVER-27704&lt;/del&gt;&lt;/a&gt; persist chunk metadata on shard primary&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a887cc06efb80e746a476d6e5a12a1e2033df8b2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a887cc06efb80e746a476d6e5a12a1e2033df8b2&lt;/a&gt;&lt;/p&gt;</comment>
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                                                                <inwardlinks description="has to be done after">
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            <issuekey id="348772">SERVER-27804</issuekey>
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            <issuekey id="349118">SERVER-27811</issuekey>
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