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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>
    </build-info>


<item>
            <title>[SERVER-21823] Update / findAndModify with {upsert: true} should report nMatched:0 nModified:0 if results in an insert</title>
                <link>https://jira.mongodb.org/browse/SERVER-21823</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Consider an update operation with the {upsert: true} flag whose query predicate does not match any of the documents in the collection:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.setLogLevel(1);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.c.drop();&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.c.insert({a: 1});&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.c.update({a: 2}, {$set: {b: 1}}, {upsert: true});&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
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&lt;p/&gt;

&lt;p&gt;This update operation does not match any documents, nor does it modify any existing documents, but in nonetheless generates the following log line:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2015-12-09T14:06:02.569-0500 I WRITE    [conn1] update test.c query: { a: 2.0 } update: { $set: { b: 1.0 } } keysExamined:0 docsExamined:1 nMatched:1 nModified:1 upsert:1 keyUpdates:0 writeConflicts:0 numYields:0 locks:{ Global: { acquireCount: { r: 1, w: 1 } }, Database: { acquireCount: { w: 1 } }, Collection: { acquireCount: { w: 1 } } } 0ms&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;Instead of &lt;tt&gt;nMatched:1&lt;/tt&gt; and &lt;tt&gt;nModified:1&lt;/tt&gt; this should report &lt;tt&gt;nMatched:0&lt;/tt&gt; and &lt;tt&gt;nModified:0&lt;/tt&gt;. This applies to both update and findAndModify for both the log and the profile collection.&lt;/p&gt;</description>
                <environment></environment>
        <key id="243047">SERVER-21823</key>
            <summary>Update / findAndModify with {upsert: true} should report nMatched:0 nModified:0 if results in an insert</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="tess.avitabile@mongodb.com">Tess Avitabile</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Dec 2015 19:10:08 +0000</created>
                <updated>Tue, 22 Mar 2016 14:13:19 +0000</updated>
                            <resolved>Fri, 29 Jan 2016 22:38:41 +0000</resolved>
                                    <version>2.6.11</version>
                    <version>3.0.7</version>
                    <version>3.2.0</version>
                                    <fixVersion>3.3.2</fixVersion>
                                    <component>Diagnostics</component>
                    <component>Write Ops</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1158547" author="xgen-internal-githook" created="Fri, 29 Jan 2016 22:38:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tessavitabile&apos;, u&apos;name&apos;: u&apos;Tess Avitabile&apos;, u&apos;email&apos;: u&apos;tess.avitabile@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21823&quot; title=&quot;Update / findAndModify with {upsert: true} should report nMatched:0 nModified:0 if results in an insert&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21823&quot;&gt;&lt;del&gt;SERVER-21823&lt;/del&gt;&lt;/a&gt; Update and findAndModify with &lt;/p&gt;
{upsert: true}
&lt;p&gt; should report nMatched:0 nModified:0 if results in an insert&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e40a6da919084cba4b0397c1da21c6ee93e78297&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e40a6da919084cba4b0397c1da21c6ee93e78297&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1109954" author="david.storch" created="Wed, 9 Dec 2015 20:30:02 +0000"  >&lt;p&gt;This is not a regression. I believe the problem in some form affects at least 2.6, 3.0, and 3.2. In fact, I purposefully preserved this behavior at one point during 3.0 development since I was working on a pure refactor for explain:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/d1224336faea6e0dbc46e676cd23e94387c220be/src/mongo/db/exec/update.cpp#L1045-L1052&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/d1224336faea6e0dbc46e676cd23e94387c220be/src/mongo/db/exec/update.cpp#L1045-L1052&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;It looks like UpdateResult is actually correct, but this is only because there is some crazy accounting that the write commands do:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/d1224336faea6e0dbc46e676cd23e94387c220be/src/mongo/db/commands/write_commands/batch_executor.cpp#L1235-L1237&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/d1224336faea6e0dbc46e676cd23e94387c220be/src/mongo/db/commands/write_commands/batch_executor.cpp#L1235-L1237&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;I have not checked on the findAndModify command response or the GLE response.&lt;/p&gt;</comment>
                            <comment id="1109931" author="rassi@10gen.com" created="Wed, 9 Dec 2015 20:17:31 +0000"  >&lt;p&gt;Dave, I have a couple of follow-up questions:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Is the update result (either in the update command response, fAM command response, or GLE response) also similarly incorrect?&lt;/li&gt;
	&lt;li&gt;Is this a regression from an earlier version of the server?&lt;/li&gt;
&lt;/ul&gt;
</comment>
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