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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-24891] aggregation pipeline new operators $ln, $log, $exp not in 3.2.7??</title>
                <link>https://jira.mongodb.org/browse/SERVER-24891</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18427&quot; title=&quot;Request for log and exponential arithmetic operators in aggregation pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18427&quot;&gt;&lt;del&gt;SERVER-18427&lt;/del&gt;&lt;/a&gt; added $ln, $log, etc. as arithmetic operators in aggregation pipeline&lt;/p&gt;

&lt;p&gt;Now running latest stable 3.2.7&lt;/p&gt;

&lt;p&gt;Using new operator in aggregation pipeline throws &quot;invalid operator&quot;.&lt;br/&gt;
Similar for $exp, $log, &lt;br/&gt;
Older operators like &quot;$add&quot;, &quot;$multiply&quot; are fine.&lt;/p&gt;

&lt;p&gt;Has this regressed?&lt;/p&gt;

&lt;p/&gt;
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&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;
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					&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;&amp;gt; version()&lt;/span&gt;&lt;/pre&gt;
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						&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;3.2.7&lt;/span&gt;&lt;/pre&gt;
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						&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;&amp;gt; db.filings.aggregate( [ {$match: {&quot;cert&quot;:90303}},{$project:{ x: { $ln: &quot;$asset&quot; } } } ] )&lt;/span&gt;&lt;/pre&gt;
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						&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;assert: command failed: { &quot;errmsg&quot; : &quot;exception: invalid operator &apos;$ln&apos;&quot;, &quot;code&quot; : 15999, &quot;ok&quot; : 0 } : aggregate failed&lt;/span&gt;&lt;/pre&gt;
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						&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;_getErrorWithCode@src/mongo/shell/utils.js:25:13&lt;/span&gt;&lt;/pre&gt;
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					&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;doassert@src/mongo/shell/assert.js:13:14&lt;/span&gt;&lt;/pre&gt;
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					&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;assert.commandWorked@src/mongo/shell/assert.js:267:5&lt;/span&gt;&lt;/pre&gt;
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		&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;DBCollection.prototype.aggregate@src/mongo/shell/collection.js:1312:5&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
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						&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;2016-07-04T19:05:30.173+0100 E QUERY    [thread1] Error: command failed: { &quot;errmsg&quot; : &quot;exception: invalid operator &apos;$ln&apos;&quot;, &quot;code&quot; : 15999, &quot;ok&quot; : 0 } : aggregate failed :&lt;/span&gt;&lt;/pre&gt;
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						&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;_getErrorWithCode@src/mongo/shell/utils.js:25:13&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;doassert@src/mongo/shell/assert.js:13:14&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;assert.commandWorked@src/mongo/shell/assert.js:267:5&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;DBCollection.prototype.aggregate@src/mongo/shell/collection.js:1312:5&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;@(shell):1:1&lt;/span&gt;&lt;/pre&gt;
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&lt;/div&gt;
&lt;p/&gt;</description>
                <environment>OS X 10.11.5  encountered in mgo (golang) driver, confirmed in Mongo command shell</environment>
        <key id="298367">SERVER-24891</key>
            <summary>aggregation pipeline new operators $ln, $log, $exp not in 3.2.7??</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="stephen.steneker@mongodb.com">Stennie Steneker</assignee>
                                    <reporter username="bill.chute@acadiant.com">Bill Chute</reporter>
                        <labels>
                    </labels>
                <created>Mon, 4 Jul 2016 18:12:59 +0000</created>
                <updated>Thu, 14 Jul 2016 16:04:59 +0000</updated>
                            <resolved>Tue, 5 Jul 2016 12:33:32 +0000</resolved>
                                    <version>3.2.7</version>
                                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1313643" author="ramon.fernandez" created="Tue, 5 Jul 2016 12:33:23 +0000"  >&lt;p&gt;Glad yo hear things are working for you &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=bill.chute%40acadiant.com&quot; class=&quot;user-hover&quot; rel=&quot;bill.chute@acadiant.com&quot;&gt;bill.chute@acadiant.com&lt;/a&gt;. In the future, please note that questions like this one are best posted on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or &lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;, where they will reach a larger audience.&lt;/p&gt;

&lt;p&gt;Closing this ticket on your behalf.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                            <comment id="1313577" author="bill.chute@acadiant.com" created="Tue, 5 Jul 2016 10:40:22 +0000"  >&lt;p&gt;Done!&lt;/p&gt;

&lt;p&gt;Stephen, thank you so very much indeed for your quick response and advice.  &lt;/p&gt;

&lt;p&gt;db.serverBuildInfo() revealed this development server was running a pre-3.2 version of mongodb, installed via MMS before Mongo cut off access to the free-of-charge development MMS and had therefore fallen off the radar for maintenance.  I manually installed 3.2.7 on the box and it works!  Now to move all remaining MapReduce complex math into Aggregation Framework.&lt;/p&gt;

&lt;p&gt;I&apos;ll now make sure all of my developers learn, as I did, the difference between &quot;version&quot; and &quot;db.serverBuildInfo()&quot;.&lt;/p&gt;

&lt;p&gt;I sincerely appreciate the quick guidance.  It appears I cannot close this item; I would if I could; of course you may.&lt;/p&gt;

&lt;p&gt;Bill.&lt;/p&gt;</comment>
                            <comment id="1313366" author="stennie" created="Tue, 5 Jul 2016 02:01:54 +0000"  >&lt;p&gt;Hi Bill,&lt;/p&gt;

&lt;p&gt;Can you confirm the MongoDB server version you are connecting to with &lt;tt&gt;db.version()&lt;/tt&gt;? The &lt;tt&gt;version()&lt;/tt&gt; command only reports the client-side &lt;tt&gt;mongo&lt;/tt&gt; shell version; aggregation is a server side operation.&lt;/p&gt;

&lt;p&gt;If you are definitely connecting to a 3.2.7 server, please provide the output of &lt;tt&gt;db.serverBuildInfo()&lt;/tt&gt; and confirm how you installed MongoDB.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Stephen&lt;/p&gt;</comment>
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