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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-54470] Add $collStats aggregate pipeline stage to API version 1</title>
                <link>https://jira.mongodb.org/browse/SERVER-54470</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;During the spec writing of DRIVERS-1437&#160;in SPEC-1780, where we were changing estimatedDocumentCount to use $collStats instead of count, we expected that doing so would allow estimatedDocumentCount to be used with a strict API. However, we found that the $collStats stage is not a part of versioned API, as shown in this error &quot;expected no error, but got (APIStrictError) stage $collStats is not allowed with &apos;apiStrict: true&apos; in API Version 1&quot;.&lt;/p&gt;

&lt;p&gt;If the $collStats stage in not included in API version 1, drivers will have to deprecate the estimatedDocumentCount function altogether, which is not ideal nor is it the apparent goal of the &lt;a href=&quot;https://docs.google.com/document/d/1Inl9AwzaSUlgZjpO5e7EdRYILExkJfTV2tUcr7Qwwgc/edit#&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;scope&lt;/a&gt; for removing count from API version 1.&lt;/p&gt;

&lt;p&gt;It seems as though $collStats was initially intended to be part of API version 1 but was not added for some reason.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1620606">SERVER-54470</key>
            <summary>Add $collStats aggregate pipeline stage to API version 1</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="13201">Fixed</resolution>
                                        <assignee username="charlie.swanson@mongodb.com">Charlie Swanson</assignee>
                                    <reporter username="benji.rewis@mongodb.com">Benji Rewis</reporter>
                        <labels>
                    </labels>
                <created>Thu, 11 Feb 2021 16:26:20 +0000</created>
                <updated>Sun, 29 Oct 2023 21:57:39 +0000</updated>
                            <resolved>Wed, 17 Mar 2021 21:39:38 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="3670160" author="xgen-internal-githook" created="Wed, 17 Mar 2021 21:35:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Charlie Swanson&apos;, &apos;email&apos;: &apos;charlie.swanson@mongodb.com&apos;, &apos;username&apos;: &apos;cswanson310&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-54470&quot; title=&quot;Add $collStats aggregate pipeline stage to API version 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-54470&quot;&gt;&lt;del&gt;SERVER-54470&lt;/del&gt;&lt;/a&gt; Use IDL to parse $collStats&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9d1a5300f40c6b8969ea5643c2b48361c2582b2e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9d1a5300f40c6b8969ea5643c2b48361c2582b2e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3612331" author="charlie.swanson" created="Thu, 11 Feb 2021 19:29:27 +0000"  >&lt;p&gt;As pointed out in &lt;a href=&quot;https://github.com/mongodb/specifications/pull/910#issuecomment-777680589&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this pull request&lt;/a&gt;, it would be good to include a test case which mirrors that in the drivers specification. This will give us an early warning if we break the drivers tests.&lt;/p&gt;</comment>
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                                        <issuelink>
            <issuekey id="1707654">SERVER-56780</issuekey>
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                                        <issuelink>
            <issuekey id="1552324">SERVER-53083</issuekey>
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                            <customfieldvalue>We added $collStats to API Version 1, but only the empty document or &amp;#39;count&amp;#39; parameters: {$collStats: {}} or {$collStats: {count: {}}} are valid and part of API Version 1 but {$collStats: {storageStats: {}}} will fail with apiStrict=true.</customfieldvalue>

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                            <customfieldvalue>&lt;p&gt;Set API strict on a 4.9+ server.&lt;/p&gt;

&lt;p&gt;Run an aggregate with the $collStats stage.&lt;/p&gt;</customfieldvalue>

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