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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-6047] $pullAll causes empty embedded object field to be created</title>
                <link>https://jira.mongodb.org/browse/SERVER-6047</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This looks like unusual behavior.&lt;/p&gt;

&lt;p&gt;For example with a document like:&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;4fd2736696a0c5567029c674&quot;), &quot;x&quot; : 10 }

&lt;p&gt;Issuing an update with $pullAll on a key that does not exist inside an embedded doc causes the field to be created:&lt;/p&gt;

&lt;p&gt;db.test.update(&lt;/p&gt;
{x:10}
&lt;p&gt;, {$pullAll : {&quot;test.a&quot; : &lt;span class=&quot;error&quot;&gt;&amp;#91;&amp;quot;foo&amp;quot;, &amp;quot;bar&amp;quot;&amp;#93;&lt;/span&gt;}})&lt;/p&gt;

&lt;p&gt;The (empty) embedded object &quot;test&quot; will now exist in the doc:&lt;br/&gt;
&amp;gt; db.test.find()&lt;br/&gt;
{ &quot;_id&quot; : ObjectId(&quot;4fd2736696a0c5567029c674&quot;), &quot;test&quot; : { }, &quot;x&quot; : 10 }&lt;/p&gt;

&lt;p&gt;I would have expected no change in the document&apos;s fields if the $pullAll references a key that does not exist.&lt;/p&gt;</description>
                <environment></environment>
        <key id="40852">SERVER-6047</key>
            <summary>$pullAll causes empty embedded object field to be created</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="richard.kreuter">Richard Kreuter</assignee>
                                    <reporter username="mikeo@mongodb.com">Michael O&apos;Brien</reporter>
                        <labels>
                    </labels>
                <created>Fri, 8 Jun 2012 21:52:19 +0000</created>
                <updated>Mon, 11 Jul 2016 18:34:08 +0000</updated>
                            <resolved>Tue, 3 Jul 2012 20:12:49 +0000</resolved>
                                                    <fixVersion>2.0.7</fixVersion>
                    <fixVersion>2.2.0-rc0</fixVersion>
                                    <component>Write Ops</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="138771" author="auto" created="Mon, 2 Jul 2012 20:45:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-07-02T12:12:34-07:00&apos;, u&apos;name&apos;: u&apos;Richard Kreuter&apos;, u&apos;email&apos;: u&apos;richard@10gen.com&apos;}
&lt;p&gt;Message: Don&apos;t grow a document on $pull/$pullAll.  &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6047&quot; title=&quot;$pullAll causes empty embedded object field to be created&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6047&quot;&gt;&lt;del&gt;SERVER-6047&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: v2.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bf25d51addc8fee6ca4d280df1da2550e9155629&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bf25d51addc8fee6ca4d280df1da2550e9155629&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="138739" author="auto" created="Mon, 2 Jul 2012 19:39:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-07-02T12:39:41-07:00&apos;, u&apos;name&apos;: u&apos;Eric Milkie&apos;, u&apos;email&apos;: u&apos;milkie@10gen.com&apos;}
&lt;p&gt;Message: fix compile &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6047&quot; title=&quot;$pullAll causes empty embedded object field to be created&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6047&quot;&gt;&lt;del&gt;SERVER-6047&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/044844545c419c793d88e5521652a59402b8feb6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/044844545c419c793d88e5521652a59402b8feb6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="138725" author="auto" created="Mon, 2 Jul 2012 19:14:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-07-02T12:12:34-07:00&apos;, u&apos;email&apos;: u&apos;richard@10gen.com&apos;, u&apos;name&apos;: u&apos;Richard Kreuter&apos;}
&lt;p&gt;Message: Don&apos;t grow a document on $pull/$pullAll.  &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6047&quot; title=&quot;$pullAll causes empty embedded object field to be created&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6047&quot;&gt;&lt;del&gt;SERVER-6047&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7a43c2260ee58f82fc44e55c021b74d821e4a16e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7a43c2260ee58f82fc44e55c021b74d821e4a16e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="134567" author="richard@10gen.com" created="Wed, 20 Jun 2012 00:50:31 +0000"  >&lt;p&gt;For what it&apos;s worth, $pull does this, too.&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
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            <issuekey id="41665">SERVER-6124</issuekey>
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