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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>[DOCS-12966] Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document</title>
                <link>https://jira.mongodb.org/browse/DOCS-12966</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #c2d2c2;&quot;&gt;
&lt;p&gt;    The shell&apos;s countDocuments method had thrown an uninformative error if the collection is empty or does not exist. Now it will return 0, the same as drivers do.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    `countDocuments` throws an error when matching 0 document.&lt;/p&gt;

&lt;p&gt;I would have expected it to follow what `count` does, which is return 0.&lt;/p&gt;

&lt;p&gt;With both versions `4.0.3` and `4.1.4` (haven&apos;t checked intermediary ones), the error I get from the bellow `steps to reproduce` is:&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;
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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;  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;2018-10-20T16:26:44.252+0100 E QUERY [js] TypeError: res[0] is undefined :&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; DBCollection.prototype.countDocuments@src/mongo/shell/collection.js:1418:5&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; @(shell):1:1&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;   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; &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;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="900567">DOCS-12966</key>
            <summary>Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13201">Fixed</resolution>
                                        <assignee username="jeffrey.allen@mongodb.com">Jeffrey Allen</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                            <label>docs-onboarding-candidate</label>
                    </labels>
                <created>Mon, 19 Aug 2019 22:17:58 +0000</created>
                <updated>Mon, 13 Nov 2023 18:17:10 +0000</updated>
                            <resolved>Fri, 4 Oct 2019 20:16:28 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                    <fixVersion>4.2.1</fixVersion>
                    <fixVersion>4.0.13</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2489342" author="xgen-internal-githook" created="Fri, 18 Oct 2019 13:25:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jeff-allen-mongo&apos;, &apos;username&apos;: &apos;jeff-allen-mongo&apos;, &apos;email&apos;: &apos;jeffrey.allen@10gen.com&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12966&quot; title=&quot;Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12966&quot;&gt;&lt;del&gt;DOCS-12966&lt;/del&gt;&lt;/a&gt;): Updating behavior for countDocuments on empty collections&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/3986f0e01b7a6c045abb2f78c14e9c05e104d715&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/3986f0e01b7a6c045abb2f78c14e9c05e104d715&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2489308" author="xgen-internal-githook" created="Fri, 18 Oct 2019 13:17:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jeff-allen-mongo&apos;, &apos;username&apos;: &apos;jeff-allen-mongo&apos;, &apos;email&apos;: &apos;jeffrey.allen@10gen.com&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12966&quot; title=&quot;Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12966&quot;&gt;&lt;del&gt;DOCS-12966&lt;/del&gt;&lt;/a&gt;): Updating behavior for countDocuments on empty collections&lt;br/&gt;
Branch: v4.2.1&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/bcd84cdac5affd7edcf98071da2e5f24426c3970&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/bcd84cdac5affd7edcf98071da2e5f24426c3970&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2489270" author="xgen-internal-githook" created="Fri, 18 Oct 2019 12:58:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;jeff-allen-mongo&apos;, &apos;email&apos;: &apos;jeffrey.allen@10gen.com&apos;, &apos;name&apos;: &apos;jeff-allen-mongo&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12966&quot; title=&quot;Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12966&quot;&gt;&lt;del&gt;DOCS-12966&lt;/del&gt;&lt;/a&gt;): Updating behavior for countDocuments on empty collections&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/68bbcf715bc77f94822c3a12966b7f118cbc3009&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/68bbcf715bc77f94822c3a12966b7f118cbc3009&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2475134" author="xgen-internal-githook" created="Thu, 10 Oct 2019 04:00:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;jeff-allen-mongo&apos;, &apos;email&apos;: &apos;jeffrey.allen@10gen.com&apos;, &apos;name&apos;: &apos;jeff-allen-mongo&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12966&quot; title=&quot;Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12966&quot;&gt;&lt;del&gt;DOCS-12966&lt;/del&gt;&lt;/a&gt;): Updating behavior for countDocuments on empty collections&lt;br/&gt;
Branch: v4.2.1&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/57ff21137b37ef22ceab971b012ddea368cd372d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/57ff21137b37ef22ceab971b012ddea368cd372d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2467694" author="xgen-internal-githook" created="Sat, 5 Oct 2019 01:45:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jeff-allen-mongo&apos;, &apos;username&apos;: &apos;jeff-allen-mongo&apos;, &apos;email&apos;: &apos;jeffrey.allen@10gen.com&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12966&quot; title=&quot;Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12966&quot;&gt;&lt;del&gt;DOCS-12966&lt;/del&gt;&lt;/a&gt;): Updating behavior for countDocuments on empty collections&lt;br/&gt;
Branch: v4.0.13&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/94703579628a8e72673e75b06e03aee91c267625&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/94703579628a8e72673e75b06e03aee91c267625&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2467274" author="xgen-internal-githook" created="Fri, 4 Oct 2019 19:48:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jeff-allen-mongo&apos;, &apos;username&apos;: &apos;jeff-allen-mongo&apos;, &apos;email&apos;: &apos;jeffrey.allen@10gen.com&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12966&quot; title=&quot;Investigate changes in SERVER-37690: countDocuments throws an error when matching 0 document&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12966&quot;&gt;&lt;del&gt;DOCS-12966&lt;/del&gt;&lt;/a&gt;): Updating behavior for countDocuments on empty collections&lt;br/&gt;
Branch: v4.2.1&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/31c7b2c4c7e899061b1756c18d4fa846dc945fa2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/31c7b2c4c7e899061b1756c18d4fa846dc945fa2&lt;/a&gt;&lt;/p&gt;</comment>
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