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    <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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            <title>[DOCS-15792] [Server] Migration thresholds are missing from Sharded Cluster Balancer topic</title>
                <link>https://jira.mongodb.org/browse/DOCS-15792</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;Currently balancing threshold are not clarified and the section contains a link to itself:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://www.mongodb.com/docs/manual/core/sharding-balancer-administration/#std-label-sharding-migration-thresholds&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/docs/manual/core/sharding-balancer-administration/#std-label-sharding-migration-thresholds&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Also, the &quot;migration thresholds&quot; link points to the same section - that should be fixed/removed.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Explanation provided by engineering&lt;/b&gt;&lt;br/&gt;
The migration threshold for 6.0 is 3x the configured chunk size for a given collection. So for the default chunk size (for 6.0) of 128MB, two shards must have a data size difference for a given collection of at least 384MB for a migration to occur.&lt;/p&gt;

&lt;p&gt;At steady state it&apos;s ok to have shards&apos; data sizes slightly differing. Much better than continuously moving data to reach perfect equality.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2215542">DOCS-15792</key>
            <summary>[Server] Migration thresholds are missing from Sharded Cluster Balancer topic</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="joseph.dougherty@mongodb.com">Joseph Dougherty</assignee>
                                    <reporter username="dmitry.ryabtsev@mongodb.com">Dmitry Ryabtsev</reporter>
                        <labels>
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                <created>Mon, 19 Dec 2022 23:06:48 +0000</created>
                <updated>Mon, 30 Oct 2023 19:26:19 +0000</updated>
                            <resolved>Wed, 19 Apr 2023 17:33:17 +0000</resolved>
                                    <version>6.0.0</version>
                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>Server</component>
                        <due>Wed, 19 Apr 2023 00:00:00 +0000</due>
                            <votes>1</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="5338358" author="JIRAUSER1264464" created="Tue, 11 Apr 2023 15:15:42 +0000"  >&lt;p&gt;Bumping priority due to linked Support ticket.&lt;/p&gt;</comment>
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