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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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>[DOCS-12880] Investigate changes in SERVER-41195: Turn off auto-splitting when the balancer is turned off</title>
                <link>https://jira.mongodb.org/browse/DOCS-12880</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;h3&gt;&lt;a name=&quot;SERVERticketdescription&quot;&gt;&lt;/a&gt;SERVER ticket description&lt;/h3&gt;

&lt;p&gt;Currently, turning off the balancer doesn&apos;t turn off auto-splitting, which has caused confusion in the field, because customers continue to observe metadata refreshes. For better customer experience we should also turn off auto-splitting, when the balancer is turned off.&lt;/p&gt;

&lt;p&gt;Since it almost never makes sense for the balancer to be on, but the auto-splitter to be off, I propose the following behaviour change of the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/balancerStart/#balancerstart&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;balancerStart&lt;/tt&gt;&lt;/a&gt; / &lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/balancerStop/#balancerstop&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;balancerStop&lt;/tt&gt;&lt;/a&gt; commands:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;balancerStop - both stops the balancer and sets the auto-splitter setting to false&lt;/li&gt;
	&lt;li&gt;balancerStart - both starts the balancer and sets the auto-splitter setting to true&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;As a result, start/stop of the balancer will completely forget what was the previous auto-splitter setting.&lt;/p&gt;

&lt;p&gt;Customers who wish to run balancer off/auto-splitter on or vice-versa configurations, will have to do it through direct writes to &lt;tt&gt;config.settings&lt;/tt&gt;.&lt;/p&gt;
&lt;h3&gt;&lt;a name=&quot;ChangeDescription%3A&quot;&gt;&lt;/a&gt;Change Description:&lt;/h3&gt;

&lt;p&gt;stopBalancer now disables autoSplit and startBalancer enables autoSplit&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;p&gt;Command and helpers&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;source/reference/command/balancerStart.txt&lt;/li&gt;
	&lt;li&gt;source/reference/command/balancerStop.txt&lt;/li&gt;
	&lt;li&gt;source/reference/method/sh.setBalancerState.txt&lt;/li&gt;
	&lt;li&gt;source/reference/method/sh.startBalancer.txt&lt;/li&gt;
	&lt;li&gt;source/reference/method/sh.stopBalancer.txt&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Rel Notes&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;source/release-notes/4.2-compatibility.txt&lt;/li&gt;
	&lt;li&gt;source/release-notes/4.2.txt&lt;/li&gt;
	&lt;li&gt;source/includes/extracts-4.2-changes.yaml&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Upgrade/Downgrade&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;source/includes/steps-4.2-downgrade-sharded-cluster.yaml&lt;/li&gt;
	&lt;li&gt;source/includes/steps-4.2-upgrade-sharded-cluster.yaml&lt;/li&gt;
	&lt;li&gt;source/includes/steps-upgrade-enterprise-sharded-cluster.yaml&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Various other places where we stop/start balancer&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;source/tutorial/build-indexes-on-sharded-clusters.txt&lt;/li&gt;
	&lt;li&gt;source/tutorial/manage-sharded-cluster-balancer.txt&lt;/li&gt;
	&lt;li&gt;source/tutorial/migrate-sharded-cluster-to-new-hardware.txt&lt;/li&gt;
	&lt;li&gt;source/tutorial/restore-sharded-cluster.txt&lt;/li&gt;
	&lt;li&gt;source/includes/steps-backup-sharded-cluster-with-snapshots.yaml&lt;/li&gt;
	&lt;li&gt;source/includes/steps-enable-authentication-in-sharded-cluster.yaml&lt;/li&gt;
	&lt;li&gt;source/includes/steps-schedule-balancer-window.yaml&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;misc reference&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;source/reference/method/sh.status.txt&lt;/li&gt;
	&lt;li&gt;source/reference/config-database.txt&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;autosplit methods&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;source/reference/method/sh.enableAutoSplit.txt&lt;/li&gt;
	&lt;li&gt;source/reference/method/sh.disableAutoSplit.txt&lt;br/&gt;
&#160;
&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;
&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;
&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="853205">DOCS-12880</key>
            <summary>Investigate changes in SERVER-41195: Turn off auto-splitting when the balancer is turned off</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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                    </labels>
                <created>Thu, 11 Jul 2019 18:00:28 +0000</created>
                <updated>Sun, 29 Oct 2023 13:56:12 +0000</updated>
                            <resolved>Mon, 29 Jul 2019 15:17:50 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                    <fixVersion>4.2.0-rc5</fixVersion>
                                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2348033" author="xgen-internal-githook" created="Mon, 29 Jul 2019 15:17:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kay Kim&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;, &apos;username&apos;: &apos;kay-kim&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12880&quot; title=&quot;Investigate changes in SERVER-41195: Turn off auto-splitting when the balancer is turned off&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12880&quot;&gt;&lt;del&gt;DOCS-12880&lt;/del&gt;&lt;/a&gt;: 4.2 autosplit and balancer start/stop&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/df6db63d83fc112cbdd4ce86c6f94f37a659acaf&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/df6db63d83fc112cbdd4ce86c6f94f37a659acaf&lt;/a&gt;&lt;/p&gt;</comment>
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