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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-57629] change $integral&amp;$derivative argument from &apos;outputUnit&apos; to &apos;unit&apos;</title>
                <link>https://jira.mongodb.org/browse/SERVER-57629</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In the $integral and the $derivative window functions, &apos;outputUnit&apos; specifies how to express time deltas as a number.  We originally called it &apos;outputUnit&apos; to avoid a name collision with the &apos;unit&apos; used for the window bounds.&lt;/p&gt;

&lt;p&gt;This name is confusing though, because often the measurements implicitly have a unit involving time.  For example, suppose you have numbers representing meters/second, and times represented as a datetime.  The result will have units of meters, so writing outputUnit: &apos;second&apos; is counterintuitive.&lt;/p&gt;

&lt;p&gt;Now that the &apos;window&apos; arguments are separate, we could go back to calling this argument just &apos;unit&apos;:&lt;/p&gt;

&lt;p/&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;  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;{$integral: {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;   input: &quot;$rate&quot;,&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   unit: &quot;second&quot;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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; },&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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; window: {&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;   range: [-1, 0],&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;</description>
                <environment></environment>
        <key id="1776280">SERVER-57629</key>
            <summary>change $integral&amp;$derivative argument from &apos;outputUnit&apos; to &apos;unit&apos;</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="jacob.evans@mongodb.com">Jacob Evans</assignee>
                                    <reporter username="david.percy@mongodb.com">David Percy</reporter>
                        <labels>
                    </labels>
                <created>Thu, 10 Jun 2021 22:48:40 +0000</created>
                <updated>Thu, 8 Jul 2021 14:19:26 +0000</updated>
                            <resolved>Fri, 25 Jun 2021 20:32:32 +0000</resolved>
                                                    <fixVersion>5.0.0-rc5</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3902105" author="xgen-internal-githook" created="Fri, 25 Jun 2021 22:03:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jacob Evans&apos;, &apos;email&apos;: &apos;jacob.evans@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57629&quot; title=&quot;change $integral&amp;amp;$derivative argument from &amp;#39;outputUnit&amp;#39; to &amp;#39;unit&amp;#39;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57629&quot;&gt;&lt;del&gt;SERVER-57629&lt;/del&gt;&lt;/a&gt; Change $integral&amp;amp;$derivative args&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/77ca833f40024000c351605ad7c96a0cc147fc20&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/77ca833f40024000c351605ad7c96a0cc147fc20&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3902005" author="xgen-internal-githook" created="Fri, 25 Jun 2021 21:28:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jacob Evans&apos;, &apos;email&apos;: &apos;jacob.evans@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57629&quot; title=&quot;change $integral&amp;amp;$derivative argument from &amp;#39;outputUnit&amp;#39; to &amp;#39;unit&amp;#39;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57629&quot;&gt;&lt;del&gt;SERVER-57629&lt;/del&gt;&lt;/a&gt; Change $integral&amp;amp;$derivative args&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/803a3be9e6438d73aa4be6559c5795d2c3a99c99&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/803a3be9e6438d73aa4be6559c5795d2c3a99c99&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3885595" author="JIRAUSER1258718" created="Thu, 17 Jun 2021 18:38:51 +0000"  >&lt;p&gt;Potentially need to update the fuzzer and a benchmark&lt;/p&gt;</comment>
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