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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-3370] $inc with implicit subfield creation on documents with similar keynames and hyphens corrupts document</title>
                <link>https://jira.mongodb.org/browse/SERVER-3370</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&amp;gt; db.example.remove() &lt;br/&gt;
&amp;gt; db.example.save({ &apos;all&apos; : {}, &apos;all-copy&apos; : {}}) &lt;br/&gt;
&amp;gt; db.example.update({}, { &apos;$inc&apos; : { &apos;all.t&apos; : 1, &apos;all-copy.t&apos; : 1 }}) &lt;br/&gt;
&amp;gt; db.example.find()&lt;br/&gt;
{ &quot;_id&quot; : ObjectId(&quot;4dc8842c8c18470a86477303&quot;), &quot;all&quot; : { }, &quot;all- &lt;br/&gt;
copy&quot; : &lt;/p&gt;
{ &quot;t&quot; : 1 }
&lt;p&gt;, &quot;all&quot; : { } } &lt;/p&gt;

&lt;p&gt;As you can see, the document is now corrupt. Somehow there are two values with exactly the same key name, and the increment action did not complete. It has something to do with the hyphen and similar keynames, because removing the hyphen fixes the problem, and changing the keynames to something not so similar fixes the problem..&lt;/p&gt;</description>
                <environment>Reproduced on 32bit and 64bit servers. Unable to reproduce on MongoDB shell on MongoDB.org though.</environment>
        <key id="19108">SERVER-3370</key>
            <summary>$inc with implicit subfield creation on documents with similar keynames and hyphens corrupts document</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="aaron">Aaron Staple</assignee>
                                    <reporter username="wouter">Wouter</reporter>
                        <labels>
                    </labels>
                <created>Tue, 5 Jul 2011 18:30:07 +0000</created>
                <updated>Tue, 12 Jul 2016 00:19:14 +0000</updated>
                            <resolved>Mon, 1 Aug 2011 17:16:19 +0000</resolved>
                                    <version>1.8.2</version>
                                    <fixVersion>1.9.2</fixVersion>
                                    <component>Write Ops</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="74078" author="auto" created="Fri, 16 Dec 2011 23:40:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;astaple&apos;, u&apos;name&apos;: u&apos;Aaron&apos;, u&apos;email&apos;: u&apos;aaron@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3370&quot; title=&quot;$inc with implicit subfield creation on documents with similar keynames and hyphens corrupts document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3370&quot;&gt;&lt;del&gt;SERVER-3370&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3218&quot; title=&quot;when i update a object, if a key not in object it should insert a new key, but  i fact my existsing key are replaced by key&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3218&quot;&gt;&lt;del&gt;SERVER-3218&lt;/del&gt;&lt;/a&gt; backport lexNumCmp fixes to 1.8&lt;br/&gt;
Branch: v1.8&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e82f9ddc53a4fe24a40f190b45dc25b7ed88ed96&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e82f9ddc53a4fe24a40f190b45dc25b7ed88ed96&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="45494" author="auto" created="Sun, 31 Jul 2011 17:28:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;astaple&apos;, u&apos;name&apos;: u&apos;Aaron&apos;, u&apos;email&apos;: u&apos;aaron@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3370&quot; title=&quot;$inc with implicit subfield creation on documents with similar keynames and hyphens corrupts document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3370&quot;&gt;&lt;del&gt;SERVER-3370&lt;/del&gt;&lt;/a&gt; partition lexNumCmp comparisions with dot characters&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/44ca61eafb112231367f012f80b38d66feadd055&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/44ca61eafb112231367f012f80b38d66feadd055&lt;/a&gt;&lt;/p&gt;</comment>
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