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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
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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-57182] reshardCollection command is shuffling data even when requested shard key already matches</title>
                <link>https://jira.mongodb.org/browse/SERVER-57182</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The reshardCollection command should instead return {ok: 1} without migrating any data when the request shard key pattern already matches the current one.&lt;/p&gt;

&lt;p&gt;The reshardCollection command is a long&amp;#45;running operation and the client&apos;s connection may get disconnected. It is important for the reshardCollection command to be manually retried by the client without causing a new instance of resharding the collection to occur had the earlier instance already completed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1756278">SERVER-57182</key>
            <summary>reshardCollection command is shuffling data even when requested shard key already matches</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="haley.connelly@mongodb.com">Haley Connelly</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>PM-234-M3</label>
                            <label>PM-234-T-lifecycle</label>
                            <label>post-rc0</label>
                    </labels>
                <created>Tue, 25 May 2021 13:02:55 +0000</created>
                <updated>Sun, 29 Oct 2023 21:53:06 +0000</updated>
                            <resolved>Thu, 10 Jun 2021 18:53:50 +0000</resolved>
                                                    <fixVersion>5.0.0-rc2</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4107953" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:52:33 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3878887" author="xgen-internal-githook" created="Tue, 15 Jun 2021 16:16:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Haley Connelly&apos;, &apos;email&apos;: &apos;haley.connelly@mongodb.com&apos;, &apos;username&apos;: &apos;haleyConnelly&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57182&quot; title=&quot;reshardCollection command is shuffling data even when requested shard key already matches&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57182&quot;&gt;&lt;del&gt;SERVER-57182&lt;/del&gt;&lt;/a&gt; reshardCollection command is shuffling data even when requested shard key already matches&lt;/p&gt;

&lt;p&gt;(cherry picked from commit df3f17d4ae56f4d22304498405fb072d9627f14a)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9a804b395df987000d8bdab9ef14ef1ba19e03df&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9a804b395df987000d8bdab9ef14ef1ba19e03df&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3871302" author="xgen-internal-githook" created="Thu, 10 Jun 2021 17:31:02 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Haley Connelly&apos;, &apos;email&apos;: &apos;haley.connelly@mongodb.com&apos;, &apos;username&apos;: &apos;haleyConnelly&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57182&quot; title=&quot;reshardCollection command is shuffling data even when requested shard key already matches&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57182&quot;&gt;&lt;del&gt;SERVER-57182&lt;/del&gt;&lt;/a&gt; reshardCollection command is shuffling data even when requested shard key already matches&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/df3f17d4ae56f4d22304498405fb072d9627f14a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/df3f17d4ae56f4d22304498405fb072d9627f14a&lt;/a&gt;&lt;/p&gt;</comment>
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