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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-4502] No chunk splits when using findAndModify() to upsert</title>
                <link>https://jira.mongodb.org/browse/SERVER-4502</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Doing upserts on a sharded collection via a findAndModify will not initiate chunk splits (and subsequent balancing).&lt;/p&gt;

&lt;p&gt;I&apos;ve attached a javascript file that shows the correct behavior for a regular upsert and reproduces the bug behavior for a findAndModify upsert.&lt;/p&gt;

&lt;p&gt;Before running, please start a sharded cluster using the mongo snippet with chunksize=1 or increase n.&lt;/p&gt;</description>
                <environment></environment>
        <key id="26703">SERVER-4502</key>
            <summary>No chunk splits when using findAndModify() to upsert</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="9">Done</resolution>
                                        <assignee username="brandon">Brandon Diamond</assignee>
                                    <reporter username="tyler@10gen.com">Tyler Brock</reporter>
                        <labels>
                    </labels>
                <created>Thu, 15 Dec 2011 20:29:06 +0000</created>
                <updated>Mon, 11 Jul 2016 18:33:18 +0000</updated>
                            <resolved>Tue, 17 Apr 2012 16:10:37 +0000</resolved>
                                    <version>1.8.4</version>
                    <version>2.0.1</version>
                    <version>2.0.2</version>
                    <version>2.0.3</version>
                                    <fixVersion>2.1.1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>4</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="110713" author="auto" created="Tue, 17 Apr 2012 16:08:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;&apos;, u&apos;name&apos;: u&apos;Brandon Diamond&apos;, u&apos;email&apos;: u&apos;brandon@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4502&quot; title=&quot;No chunk splits when using findAndModify() to upsert&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4502&quot;&gt;&lt;del&gt;SERVER-4502&lt;/del&gt;&lt;/a&gt;: sharded findAndModify now checks for splits&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2526f0d8144d211187fb1571e33f24f32aa64d2e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2526f0d8144d211187fb1571e33f24f32aa64d2e&lt;/a&gt;&lt;/p&gt;</comment>
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                            <attachment id="14130" name="findAndModifyUpsertBug.js" size="961" author="tyler@10gen.com" created="Thu, 15 Dec 2011 20:29:06 +0000"/>
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