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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-7110] _addSpecial() flags not used by DBCollection.getCount() method eg collection.find()._addSpecial().count()</title>
                <link>https://jira.mongodb.org/browse/SERVER-7110</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We tag each query for profiling using _addSpecial and $comment:&lt;/p&gt;

&lt;p&gt;db.test.find(&lt;/p&gt;
{field:&quot;value&quot;}
&lt;p&gt;)._addSpecial(&quot;$comment&quot;, &quot;&lt;span class=&quot;error&quot;&gt;&amp;#91;COMMENT&amp;#93;&lt;/span&gt;&quot;)&lt;/p&gt;

&lt;p&gt;These show up correctly in the logs and db.currentOp() when using collection.find() method.&lt;/p&gt;

&lt;p&gt;But any flags added via _addSpecial are not used by the collection&apos;s getCount() method. We use the count method to display a query&apos;s total count:&lt;/p&gt;

&lt;p&gt;db.test.find(&lt;/p&gt;
{field:&quot;value&quot;}
&lt;p&gt;).count()&lt;br/&gt;
db.test.find(&lt;/p&gt;
{field:&quot;value&quot;}
&lt;p&gt;)._addSpecial(&quot;$comment&quot;, &quot;&lt;span class=&quot;error&quot;&gt;&amp;#91;COMMENT&amp;#93;&lt;/span&gt;&quot;).count()&lt;/p&gt;

&lt;p&gt;The .count() disregards any special flags, so profiling/tracing/db.currentOp() do not show our unique tag for that query.&lt;/p&gt;

&lt;p&gt;Based on the source code, the DBCollection.getCount() method does not accept any special flags parameters, so it looks like a core server issue.&lt;/p&gt;

&lt;p&gt;See attached console session, where a .find()._addSpecial shows the $comment via db.currentOp(), but it is not displayed when I issue a .find()._addSpecial().count()&lt;/p&gt;</description>
                <environment>Linux CentOS/RHEL, Mac OSX</environment>
        <key id="51171">SERVER-7110</key>
            <summary>_addSpecial() flags not used by DBCollection.getCount() method eg collection.find()._addSpecial().count()</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="1" iconUrl="https://jira.mongodb.org/images/icons/priorities/blocker.svg">Blocker - P1</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="aaron">Aaron Staple</assignee>
                                    <reporter username="joe.davis@servicenow.com">Joe Davis</reporter>
                        <labels>
                    </labels>
                <created>Sat, 22 Sep 2012 17:03:01 +0000</created>
                <updated>Tue, 14 Mar 2017 13:57:39 +0000</updated>
                            <resolved>Mon, 24 Sep 2012 23:08:35 +0000</resolved>
                                    <version>2.2.0</version>
                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="167518" author="joe.davis@servicenow.com" created="Mon, 24 Sep 2012 20:55:04 +0000"  >&lt;p&gt;Awesome, works great.&lt;/p&gt;

&lt;p&gt;Feel free to close this as not an issue...&lt;/p&gt;</comment>
                            <comment id="167469" author="aaron" created="Mon, 24 Sep 2012 19:16:42 +0000"  >&lt;p&gt;Hi Joe,&lt;/p&gt;

&lt;p&gt;It looks like the &apos;special&apos; version of $comment isn&apos;t supported with count.  One thing you might do is just put $comment inside your query like an operator, which is also supported:&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;db.test.find( { msg:&quot;Test message 10000&quot;, $comment:&quot;a comment&quot; } );&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10320">
                    <name>Documented</name>
                                                                <inwardlinks description="is documented by">
                                        <issuelink>
            <issuekey id="319668">DOCS-9028</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
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                <attachments>
                            <attachment id="20201" name="mongo-session.txt" size="1127" author="joe.davis@servicenow.com" created="Sat, 22 Sep 2012 17:03:01 +0000"/>
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