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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-43286] Prevent mapReduce from outputting to system collections</title>
                <link>https://jira.mongodb.org/browse/SERVER-43286</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In some manual tests it seemed like it was not possible to output to &quot;system.views&quot; since we prevent renaming to/from that collection. However I was able to output to &quot;system.js&quot; and there&apos;s no enforcement that the schema matches (see also &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-39122&quot; title=&quot;Enforce schema on system collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-39122&quot;&gt;&lt;del&gt;SERVER-39122&lt;/del&gt;&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;This doesn&apos;t really sound like a &quot;feature&quot; and I think should be disallowed. $out does not allow outputting to system collections.&lt;/p&gt;</description>
                <environment></environment>
        <key id="923645">SERVER-43286</key>
            <summary>Prevent mapReduce from outputting to system collections</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Wed, 11 Sep 2019 17:35:10 +0000</created>
                <updated>Sun, 29 Oct 2023 22:17:16 +0000</updated>
                            <resolved>Mon, 9 Mar 2020 20:34:31 +0000</resolved>
                                                    <fixVersion>4.4.0</fixVersion>
                                    <component>MapReduce</component>
                                        <votes>0</votes>
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                                                                                                                <comments>
                            <comment id="2955527" author="charlie.swanson" created="Mon, 9 Mar 2020 20:34:32 +0000"  >&lt;p&gt;This is no longer a problem after completing a recent project where we created a new implementation of mapReduce backed by the aggregation framework.&lt;/p&gt;</comment>
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