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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-3602] Add fast-path for migrating empty chunks</title>
                <link>https://jira.mongodb.org/browse/SERVER-3602</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Curently sleep for a second on every moveChunk which significantly slows down presplitting. For example, to split into 4096 chunks will take about 75 minutes.&lt;/p&gt;

&lt;p&gt;Related forum thread: &lt;a href=&quot;http://groups.google.com/group/mongodb-user/browse_thread/thread/7530e8896da419e6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://groups.google.com/group/mongodb-user/browse_thread/thread/7530e8896da419e6&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="21016">SERVER-3602</key>
            <summary>Add fast-path for migrating empty chunks</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="matulef">Kevin Matulef</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                    </labels>
                <created>Mon, 15 Aug 2011 20:04:40 +0000</created>
                <updated>Mon, 11 Jul 2016 18:33:14 +0000</updated>
                            <resolved>Tue, 20 Nov 2012 00:49:33 +0000</resolved>
                                                    <fixVersion>2.3.1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="221701" author="eliot" created="Fri, 21 Dec 2012 21:49:58 +0000"  >&lt;p&gt;This is a small code change, but a huge semantic change.&lt;br/&gt;
This is not safe enough for backport.&lt;/p&gt;</comment>
                            <comment id="194244" author="auto" created="Mon, 19 Nov 2012 23:48:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-11-19T02:30:43Z&apos;, u&apos;email&apos;: u&apos;matulef@gmail.com&apos;, u&apos;name&apos;: u&apos;Kevin Matulef&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3602&quot; title=&quot;Add fast-path for migrating empty chunks&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3602&quot;&gt;&lt;del&gt;SERVER-3602&lt;/del&gt;&lt;/a&gt; similar functionality, fewer chars&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2ded9d6bbafbf276dc1a902f852daa068543a54f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2ded9d6bbafbf276dc1a902f852daa068543a54f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="190898" author="auto" created="Fri, 16 Nov 2012 00:31:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-11-16T00:31:27Z&apos;, u&apos;name&apos;: u&apos;Kevin Matulef&apos;, u&apos;email&apos;: u&apos;matulef@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7358&quot; title=&quot;Pre-split new collections when using a hashed shard key&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7358&quot;&gt;&lt;del&gt;SERVER-7358&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3602&quot; title=&quot;Add fast-path for migrating empty chunks&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3602&quot;&gt;&lt;del&gt;SERVER-3602&lt;/del&gt;&lt;/a&gt; make empty chunk movements faster&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e8cee07ef063b849e89b507dbcb618d48b7cd2fe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e8cee07ef063b849e89b507dbcb618d48b7cd2fe&lt;/a&gt;&lt;/p&gt;</comment>
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