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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>[COMPASS-6095] Investigate changes in SERVER-66297: Get rid of `maxSize` for shards</title>
                <link>https://jira.mongodb.org/browse/COMPASS-6095</link>
                <project id="13182" key="COMPASS">Compass </project>
                    <description>    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Original Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;    maxSize field from addShard command has been deprecated and InvalidOptions error is thrown in case user runs addShard&lt;/p&gt;
{ ... , maxSize: &amp;lt;value&amp;gt; }
&lt;p&gt;. &lt;br/&gt;
maxSize field entry won&apos;t be generated in config.shards, and in case is present because of an upgrade from previous version (we do not delete the entry when upgrade) the field is ignored. &lt;br/&gt;
Every cluster related stats printing the max size of the shard do not provide this information anymore.&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    Get rid of &lt;a href=&quot;https://www.mongodb.com/docs/manual/tutorial/manage-sharded-cluster-balancer/#change-the-maximum-storage-size-for-a-given-shard&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;maxSize&lt;/a&gt; since it&apos;s a soft constraint and doesn&apos;t even do well what it&apos;s intended to do: it&apos;s a legacy parameter that made sense with the MMAP storage engine. Nowadays, the WT storage engine stores data in compressed form so this parameter is not honored anymore.&lt;/p&gt;


&lt;p&gt;Behavioral changes and upgrade/downgrade considerations: &lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;In versions &amp;gt;= 6.1 if you specify maxSize on addShard we will error with &#8220;InvalidOptions&#8221;&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;maxSize configuration field in config.settings will be kept until 7.0 to support dowgrade and then removed completely as part of 7.1 FCV upgrade procedure (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-68430&quot; title=&quot;remove maxSizeMb entry from sharding catalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-68430&quot;&gt;&lt;del&gt;SERVER-68430&lt;/del&gt;&lt;/a&gt;)&lt;/li&gt;
&lt;/ul&gt;

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                <environment></environment>
        <key id="2128182">COMPASS-6095</key>
            <summary>Investigate changes in SERVER-66297: Get rid of `maxSize` for shards</summary>
                <type id="10501" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Investigation</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="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
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                <created>Fri, 2 Sep 2022 07:46:46 +0000</created>
                <updated>Fri, 2 Sep 2022 10:24:05 +0000</updated>
                            <resolved>Fri, 2 Sep 2022 10:24:05 +0000</resolved>
                                                    <fixVersion>No version</fixVersion>
                                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4797491" author="JIRAUSER1256529" created="Fri, 2 Sep 2022 10:24:05 +0000"  >&lt;p&gt;No impact.&lt;/p&gt;</comment>
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