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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-33435] Remove the collstats command</title>
                <link>https://jira.mongodb.org/browse/SERVER-33435</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24496&quot; title=&quot;Merge collStats output with $collStats aggregation source&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24496&quot;&gt;&lt;del&gt;SERVER-24496&lt;/del&gt;&lt;/a&gt;, I believe we gave the $collStats aggregation source a strict superset of the functionality of the weird &lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/collStats/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;collStats&lt;/tt&gt; command&lt;/a&gt;. It would be nice to remove this command, since&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;it doesn&apos;t handle views, unlike &lt;tt&gt;$collStats&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;it&apos;s weird that there&apos;s two things with the same name in the server&lt;/li&gt;
	&lt;li&gt;not having it would mean we wouldn&apos;t have to upkeep it; see &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33434&quot; title=&quot;collstats, dataSize, listIndexes, and filemd5 on mongos are unversioned&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33434&quot;&gt;&lt;del&gt;SERVER-33434&lt;/del&gt;&lt;/a&gt;&lt;/li&gt;
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        <key id="500877">SERVER-33435</key>
            <summary>Remove the collstats command</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="kyle.suarez@mongodb.com">Kyle Suarez</reporter>
                        <labels>
                    </labels>
                <created>Wed, 21 Feb 2018 21:35:48 +0000</created>
                <updated>Tue, 6 Dec 2022 03:37:36 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1821177" author="ian@10gen.com" created="Fri, 2 Mar 2018 15:52:06 +0000"  >&lt;p&gt;deferring thinking about this past 4.0, so &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kyle.suarez&quot; class=&quot;user-hover&quot; rel=&quot;kyle.suarez&quot;&gt;kyle.suarez&lt;/a&gt; please talk to the DS teams about needing to continue to handle this in 4.0.&lt;/p&gt;</comment>
                            <comment id="1813543" author="kyle.suarez" created="Thu, 22 Feb 2018 21:49:45 +0000"  >&lt;p&gt;Either, though I think there might be some weird things that could fall out if we were to replace its internal implementation with running an aggregation:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;returns a cursor, instead of the current behavior, which I believe is a single document&lt;/li&gt;
	&lt;li&gt;may be some weird response formats depending on if the namespace exists or not (e.g. aggregations on mongos on unknown namespaces have different results than if you were to issue it directly against a mongod)&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="1813506" author="asya" created="Thu, 22 Feb 2018 21:20:45 +0000"  >&lt;p&gt;Do you mean remove the command entirely or replace its internal implementation with running $collStats agg stage?&lt;/p&gt;</comment>
                            <comment id="1812181" author="kyle.suarez" created="Wed, 21 Feb 2018 21:36:36 +0000"  >&lt;p&gt;Threw this on the Query Team since I dunno who else to give it to. It does seem like a by-product of the &lt;tt&gt;$collStats&lt;/tt&gt; work, though.&lt;/p&gt;</comment>
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            <issuekey id="292727">SERVER-24496</issuekey>
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            <issuekey id="1030389">SERVER-44891</issuekey>
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