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    <title>MongoDB Jira</title>
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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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<item>
            <title>[SERVER-37546] balancer migrates chunks of unsharded collections</title>
                <link>https://jira.mongodb.org/browse/SERVER-37546</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Test:&lt;br/&gt;
1. Start a sharding test with the balancer enabled.&lt;/p&gt;

&lt;p&gt;2. Test that the balancer will move an unsharded collection associated with a zone when it is on the wrong shard. &lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Create an unsharded collection on shard A.&lt;/li&gt;
	&lt;li&gt;Add shard B to &quot;zoneA&quot;.&lt;/li&gt;
	&lt;li&gt;Add the zone to the unsharded collection using `updateZoneKeyRange`.&lt;/li&gt;
	&lt;li&gt;Assert that the balancer eventually moves the collection to the to shard B.&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;3.  Test that the balancer moves unsharded collections off a draining shard.&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Create two unsharded collections on shard A, one that is empty and one that is not, in the same DB.&lt;/li&gt;
	&lt;li&gt;Remove the shard that these collections reside on.&lt;/li&gt;
	&lt;li&gt;Assert that the balancer eventually moves the collection to shard B.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="616658">SERVER-37546</key>
            <summary>balancer migrates chunks of unsharded collections</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="13203">Gone away</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="misha.tyulenev@mongodb.com">Misha Tyulenev</reporter>
                        <labels>
                            <label>MaxH</label>
                            <label>pm-1051-legacy-tickets</label>
                    </labels>
                <created>Wed, 10 Oct 2018 17:59:00 +0000</created>
                <updated>Fri, 27 Oct 2023 20:43:13 +0000</updated>
                            <resolved>Wed, 2 Nov 2022 12:59:52 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4947571" author="max.hirschhorn@10gen.com" created="Wed, 2 Nov 2022 12:59:52 +0000"  >&lt;p&gt;This ticket was originally part of PM-1051 but is no longer necessary.&lt;/p&gt;</comment>
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