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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-1339] updates with $ miss some index updates WAS: Wrong entries returned if same property name used twice in a document</title>
                <link>https://jira.mongodb.org/browse/SERVER-1339</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Steps to reproduce:&lt;/p&gt;

&lt;p&gt;//create initial data&lt;br/&gt;
&amp;gt; db.foo.drop();&lt;br/&gt;
&amp;gt; db.foo.insert({abc:&lt;/p&gt;
{visible:true}
&lt;p&gt;, testarray:[&lt;/p&gt;
{foobar_id:316, visible:true, xxx: 1}
&lt;p&gt;]});&lt;br/&gt;
&amp;gt; db.foo.ensureIndex(&lt;/p&gt;
{&apos;abc.visible&apos;:1, &apos;testarray.visible&apos;:1, &apos;testarray.xxx&apos;: 1}
&lt;p&gt;);&lt;/p&gt;

&lt;p&gt;//it is found correctly&lt;br/&gt;
&amp;gt; db.foo.find({&apos;abc.visible&apos;:true, testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:1}
&lt;p&gt;}});&lt;br/&gt;
{ &quot;_id&quot; : ObjectId(&quot;4c2c90393a3c2265cd3d1288&quot;), &quot;abc&quot; : &lt;/p&gt;
{ &quot;visible&quot; : true }
&lt;p&gt;, &quot;testarray&quot; : [ &lt;/p&gt;
{ &quot;foobar_id&quot; : 316, &quot;visible&quot; : true, &quot;xxx&quot; : 1 }
&lt;p&gt; ] }&lt;br/&gt;
&amp;gt; db.foo.find({testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:1}
&lt;p&gt;}});&lt;br/&gt;
{ &quot;_id&quot; : ObjectId(&quot;4c2c90393a3c2265cd3d1288&quot;), &quot;abc&quot; : &lt;/p&gt;
{ &quot;visible&quot; : true }
&lt;p&gt;, &quot;testarray&quot; : [ &lt;/p&gt;
{ &quot;foobar_id&quot; : 316, &quot;visible&quot; : true, &quot;xxx&quot; : 1 }
&lt;p&gt; ] }&lt;/p&gt;

&lt;p&gt;//update the array&lt;br/&gt;
&amp;gt; db.foo.update(&lt;/p&gt;
{&apos;testarray.foobar_id&apos;:316}
&lt;p&gt;, {&apos;$set&apos;: {&apos;testarray.$.visible&apos;: true, &apos;testarray.$.xxx&apos;: 2}}, false, true);&lt;/p&gt;

&lt;p&gt;//verify it updated correctly&lt;br/&gt;
&amp;gt; db.foo.find();&lt;br/&gt;
{ &quot;_id&quot; : ObjectId(&quot;4c2c90393a3c2265cd3d1288&quot;), &quot;abc&quot; : &lt;/p&gt;
{ &quot;visible&quot; : true }
&lt;p&gt;, &quot;testarray&quot; : [ &lt;/p&gt;
{ &quot;foobar_id&quot; : 316, &quot;visible&quot; : true, &quot;xxx&quot; : 2 }
&lt;p&gt; ] }&lt;/p&gt;

&lt;p&gt;//this find still works&lt;br/&gt;
&amp;gt; db.foo.find({testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:2}
&lt;p&gt;}});&lt;br/&gt;
{ &quot;_id&quot; : ObjectId(&quot;4c2c90393a3c2265cd3d1288&quot;), &quot;abc&quot; : &lt;/p&gt;
{ &quot;visible&quot; : true }
&lt;p&gt;, &quot;testarray&quot; : [ &lt;/p&gt;
{ &quot;foobar_id&quot; : 316, &quot;visible&quot; : true, &quot;xxx&quot; : 2 }
&lt;p&gt; ] }&lt;/p&gt;

&lt;p&gt;//here comes the issue, nothing found here&lt;br/&gt;
&amp;gt; db.foo.find({&apos;abc.visible&apos;:true, testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:2}
&lt;p&gt;}});&lt;br/&gt;
//expected: the one entry created above (as &apos;avc.visible&apos; is still true)&lt;/p&gt;


&lt;p&gt;just commands for easy copy&amp;amp;paste:&lt;br/&gt;
db.foo.drop();&lt;br/&gt;
db.foo.insert({abc:&lt;/p&gt;
{visible:true}
&lt;p&gt;, testarray:[&lt;/p&gt;
{foobar_id:316, visible:true, xxx: 1}
&lt;p&gt;]});&lt;br/&gt;
db.foo.ensureIndex(&lt;/p&gt;
{&apos;abc.visible&apos;:1, &apos;testarray.visible&apos;:1, &apos;testarray.xxx&apos;: 1}
&lt;p&gt;);&lt;br/&gt;
db.foo.find({&apos;abc.visible&apos;:true, testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:1}
&lt;p&gt;}});&lt;br/&gt;
db.foo.find({testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:1}
&lt;p&gt;}});&lt;br/&gt;
db.foo.update(&lt;/p&gt;
{&apos;testarray.foobar_id&apos;:316}
&lt;p&gt;, {&apos;$set&apos;: {&apos;testarray.$.visible&apos;: true, &apos;testarray.$.xxx&apos;: 2}}, false, true);&lt;br/&gt;
db.foo.find();&lt;br/&gt;
db.foo.find({testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:2}
&lt;p&gt;}});&lt;br/&gt;
db.foo.find({&apos;abc.visible&apos;:true, testarray:{&apos;$elemMatch&apos;: &lt;/p&gt;
{visible:true, xxx:2}
&lt;p&gt;}});&lt;/p&gt;

&lt;p&gt;renaming one &quot;visible&quot; property is a workaround.&lt;/p&gt;</description>
                <environment>Debian Linux 32-Bit</environment>
        <key id="12309">SERVER-1339</key>
            <summary>updates with $ miss some index updates WAS: Wrong entries returned if same property name used twice in a 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="eliot">Eliot Horowitz</assignee>
                                    <reporter username="niko.sams">Niko Sams</reporter>
                        <labels>
                    </labels>
                <created>Thu, 1 Jul 2010 09:02:09 +0000</created>
                <updated>Tue, 12 Jul 2016 00:30:11 +0000</updated>
                            <resolved>Thu, 1 Jul 2010 11:01:38 +0000</resolved>
                                    <version>1.4.4</version>
                    <version>1.5.3</version>
                                    <fixVersion>1.5.4</fixVersion>
                                    <component>Index Maintenance</component>
                    <component>Write Ops</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="15263" author="auto" created="Thu, 1 Jul 2010 11:01:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;erh&apos;, &apos;name&apos;: &apos;Eliot Horowitz&apos;, &apos;email&apos;: &apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: fix $ update with indexes in some cases &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1339&quot; title=&quot;updates with $ miss some index updates WAS: Wrong entries returned if same property name used twice in a document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1339&quot;&gt;&lt;del&gt;SERVER-1339&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/c2aa43941528b581d61e1b8ab8217ed3e657fed0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/c2aa43941528b581d61e1b8ab8217ed3e657fed0&lt;/a&gt;&lt;/p&gt;</comment>
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