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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-9690] SplitVector fails to find the mid-point of a chunk</title>
                <link>https://jira.mongodb.org/browse/SERVER-9690</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;SplitVector fails to find the mid-point of a chunk if it is forced and there are more than 250000 records in the chunk.&lt;/p&gt;

&lt;p&gt;To test this run the following from the mongo shell:&lt;/p&gt;

&lt;p&gt;&amp;gt; use test&lt;br/&gt;
switched to db test&lt;br/&gt;
&amp;gt; for (i=0; i &amp;lt; 500000; i++) {db.col.insert(&lt;/p&gt;
{&quot;i&quot;:i}
&lt;p&gt;);}&lt;br/&gt;
&amp;gt; db.col.ensureIndex(&lt;/p&gt;
{&quot;i&quot;:1}
&lt;p&gt;)&lt;/p&gt;

&lt;p&gt;&amp;gt; db.adminCommand({&quot;splitVector&quot;: &quot;test.col&quot;, &quot;keyPattern&quot;: &lt;/p&gt;
{i:1}
&lt;p&gt;, &quot;min&quot;: &lt;/p&gt;
{i:0}
&lt;p&gt;, &quot;max&quot;: &lt;/p&gt;
{i: 250001}
&lt;p&gt;, force: true})&lt;/p&gt;

&lt;p&gt;it will output something like this:&lt;/p&gt;

&lt;p&gt;{&quot;timeMillis&quot; : 81, &quot;splitKeys&quot;: [&lt;/p&gt;
{&quot;i&quot;: 250000}
&lt;p&gt;], &quot;ok&quot;: 1}&lt;/p&gt;

&lt;p&gt;so the split point it suggests is the record just before the last one, which is pretty far from the middle.&lt;/p&gt;</description>
                <environment></environment>
        <key id="75411">SERVER-9690</key>
            <summary>SplitVector fails to find the mid-point of a chunk</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="dawei">David Weibull</reporter>
                        <labels>
                    </labels>
                <created>Wed, 15 May 2013 08:21:50 +0000</created>
                <updated>Wed, 10 Dec 2014 23:05:37 +0000</updated>
                            <resolved>Wed, 5 Jun 2013 18:07:06 +0000</resolved>
                                    <version>2.2.4</version>
                    <version>2.4.3</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="336015" author="dawei" created="Wed, 15 May 2013 08:23:35 +0000"  >&lt;p&gt;This is related to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9498&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-9498&lt;/a&gt;&lt;/p&gt;</comment>
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