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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>[SERVER-61727] Implement the &quot;move and merge chunks&quot; phase of the Collection Chunks defragmentation algorithm</title>
                <link>https://jira.mongodb.org/browse/SERVER-61727</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Implement Phase 2 of the merge chunk routine according to the technical design&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Move small chunks (&amp;lt; 25 % targetChunkSize) to larger contiguous chunks&lt;/li&gt;
	&lt;li&gt;Might have produced oversized chunks &amp;gt; target chunk size, so we split them&lt;/li&gt;
	&lt;li&gt;Convergence: If no more operations are queued inthen we reached convergence&lt;/li&gt;
	&lt;li&gt;return to the normal balancer mode&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1932963">SERVER-61727</key>
            <summary>Implement the &quot;move and merge chunks&quot; phase of the Collection Chunks defragmentation algorithm</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="paolo.polato@mongodb.com">Paolo Polato</assignee>
                                    <reporter username="paolo.polato@mongodb.com">Paolo Polato</reporter>
                        <labels>
                    </labels>
                <created>Wed, 24 Nov 2021 14:29:50 +0000</created>
                <updated>Sun, 29 Oct 2023 21:45:38 +0000</updated>
                            <resolved>Thu, 20 Jan 2022 09:44:39 +0000</resolved>
                                    <version>Backlog</version>
                                    <fixVersion>5.3.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4302290" author="xgen-internal-githook" created="Thu, 20 Jan 2022 09:19:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Paolo Polato&apos;, &apos;email&apos;: &apos;paolo.polato@mongodb.com&apos;, &apos;username&apos;: &apos;ppolato&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61727&quot; title=&quot;Implement the &amp;quot;move and merge chunks&amp;quot; phase of the Collection Chunks defragmentation algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61727&quot;&gt;&lt;del&gt;SERVER-61727&lt;/del&gt;&lt;/a&gt;: implementation of Collection defragmentation Phase 2&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4662350c7b426e3287f95f0cc8cc22e3f49d8851&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4662350c7b426e3287f95f0cc8cc22e3f49d8851&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4249248" author="xgen-internal-githook" created="Wed, 15 Dec 2021 11:47:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Paolo Polato&apos;, &apos;email&apos;: &apos;paolo.polato@mongodb.com&apos;, &apos;username&apos;: &apos;ppolato&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61727&quot; title=&quot;Implement the &amp;quot;move and merge chunks&amp;quot; phase of the Collection Chunks defragmentation algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61727&quot;&gt;&lt;del&gt;SERVER-61727&lt;/del&gt;&lt;/a&gt; Refactoring existing balancer defrag policy&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ee0c80d6d4e2103a86299e22daf4555205b47af4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ee0c80d6d4e2103a86299e22daf4555205b47af4&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1966741">SERVER-62755</issuekey>
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            <issuelink>
            <issuekey id="1889952">SERVER-60459</issuekey>
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            <issuekey id="1968984">SERVER-62896</issuekey>
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            <issuekey id="2296443">SERVER-75188</issuekey>
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