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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-50441] Hash-sharding an empty collection should not place initial chunks into a draining shard </title>
                <link>https://jira.mongodb.org/browse/SERVER-50441</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Avoid unnecessary extra draining work as the collection gets populated.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1448635">SERVER-50441</key>
            <summary>Hash-sharding an empty collection should not place initial chunks into a draining shard </summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="backlog-server-catalog-and-routing">Backlog - Catalog and Routing</assignee>
                                    <reporter username="josef.ahmad@mongodb.com">Josef Ahmad</reporter>
                        <labels>
                            <label>oldshardingemea</label>
                            <label>sharding-common-backlog</label>
                    </labels>
                <created>Fri, 21 Aug 2020 08:21:44 +0000</created>
                <updated>Wed, 17 Jan 2024 13:06:49 +0000</updated>
                            <resolved>Wed, 17 Jan 2024 13:06:49 +0000</resolved>
                                    <version>4.0.20</version>
                    <version>3.6.19</version>
                    <version>4.4.0</version>
                    <version>4.2.9</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="3357725" author="kaloian.manassiev" created="Tue, 25 Aug 2020 14:06:52 +0000"  >&lt;p&gt;The problem here is that the initial split policy policy only &quot;kind of&quot; acts like the balancer, thus omitting some of the more important BalancerPolicy checks.&lt;/p&gt;</comment>
                            <comment id="3351718" author="dinesh.chander" created="Fri, 21 Aug 2020 08:29:02 +0000"  >&lt;p&gt;&lt;del&gt;Just to clarify, this is not just for hashed sharding. This also happens with normal shard key if we explicitly specify &lt;tt&gt;numInitialChunks&lt;/tt&gt;.&lt;/del&gt;&lt;br/&gt;
Taking this back. This is only applicable to hashed shard key. Josef pointed this out and &lt;a href=&quot;https://docs.mongodb.com/manual/reference/method/sh.shardCollection/index.html#definition&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;docs&lt;/a&gt; also mention that &lt;tt&gt;numInitialChunks&lt;/tt&gt; is only available for hashed shard keys.&lt;/p&gt;</comment>
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