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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-13826] splitChunk failure when &quot;find&quot; mode of operation is used</title>
                <link>https://jira.mongodb.org/browse/SERVER-13826</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Testcase:&lt;br/&gt;
&lt;a href=&quot;https://github.com/dcci/mongo-stress/blob/master/moveShard.c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/dcci/mongo-stress/blob/master/moveShard.c&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;In order to trigger, here &lt;a href=&quot;https://github.com/dcci/mongo-stress/blob/master/moveShard.c#L102&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/dcci/mongo-stress/blob/master/moveShard.c#L102&lt;/a&gt;&lt;br/&gt;
instead of i += 2, just put ++i.&lt;/p&gt;

&lt;p&gt;The first 14 splits works just fine then 1 over 2 fails. As long as &quot;find&quot; is used, maybe it&apos;s not actually splitting at the exact point, it&apos;s splitting the chunk in half, then when you keep splitting there&apos;s already a chunk boundary at that point. Using &quot;middle&quot; fixes the problem.&lt;/p&gt;

&lt;p&gt;After a discussion with &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=greg_10gen&quot; class=&quot;user-hover&quot; rel=&quot;greg_10gen&quot;&gt;greg_10gen&lt;/a&gt; he thinks this is probably WAD, but keep track of this for further investigation.&lt;/p&gt;</description>
                <environment></environment>
        <key id="134707">SERVER-13826</key>
            <summary>splitChunk failure when &quot;find&quot; mode of operation is used</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>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="davide.italiano">Davide Italiano</reporter>
                        <labels>
                            <label>28qa</label>
                    </labels>
                <created>Fri, 2 May 2014 23:52:28 +0000</created>
                <updated>Mon, 19 Oct 2015 14:26:12 +0000</updated>
                            <resolved>Mon, 19 Oct 2015 14:26:12 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
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