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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>[DOCS-13023] [Server] Explain why chunkSize is divided by two in Limits &gt; Sharding Existing Collection Data Size</title>
                <link>https://jira.mongodb.org/browse/DOCS-13023</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;
&lt;p&gt;&lt;a href=&quot;https://docs.mongodb.com/manual/reference/limits/#Sharding-Existing-Collection-Data-Size&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/reference/limits/#Sharding-Existing-Collection-Data-Size&lt;/a&gt;&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;maxCollectionSize (MB) = maxSplits * (chunkSize / 2)&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;I believe this two stems from the fact that initial chunks will be half full when created. Explaining this would better help users understand how many chunks to expect when sharding a collection.&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

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        <key id="919037">DOCS-13023</key>
            <summary>[Server] Explain why chunkSize is divided by two in Limits &gt; Sharding Existing Collection Data Size</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="nick.villahermosa@mongodb.com">Nick Villahermosa</assignee>
                                    <reporter username="kevin.arhelger@mongodb.com">Kevin Arhelger</reporter>
                        <labels>
                            <label>quick-win</label>
                            <label>server-docs-bug-bash</label>
                    </labels>
                <created>Fri, 6 Sep 2019 22:16:14 +0000</created>
                <updated>Mon, 30 Oct 2023 20:35:02 +0000</updated>
                            <resolved>Fri, 21 Jul 2023 17:52:01 +0000</resolved>
                                    <version>4.2.0</version>
                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5583465" author="JIRAUSER1270643" created="Fri, 21 Jul 2023 17:52:01 +0000"  >&lt;p&gt;Backports: 6.3, 6.0, 5.0, 4.4&lt;/p&gt;</comment>
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