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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-5087] reduce required memory for aggregation steps by freeing data that has been returned by $group and $sort</title>
                <link>https://jira.mongodb.org/browse/SERVER-5087</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;$group and $sort must take in all their input before they can produce a result.&lt;/p&gt;

&lt;p&gt;At present, when the output is produced, it is simply scrolled over by the DocumentSource.  We could start freeing values that have been returned by these sources as they are returned.  This may be more noticeable (allow more processing) when more than one $group and/or $sort appear in the same pipeline &amp;#8211; documents will flow from one to the next, requiring a constant amount of memory, instead of accumulating in each aggregator in the pipeline.&lt;/p&gt;</description>
                <environment></environment>
        <key id="31526">SERVER-5087</key>
            <summary>reduce required memory for aggregation steps by freeing data that has been returned by $group and $sort</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="3">Duplicate</resolution>
                                        <assignee username="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="dan@mongodb.com">Daniel Pasette</reporter>
                        <labels>
                    </labels>
                <created>Fri, 24 Feb 2012 23:41:33 +0000</created>
                <updated>Tue, 24 Sep 2013 22:01:21 +0000</updated>
                            <resolved>Tue, 24 Sep 2013 22:01:21 +0000</resolved>
                                                                    <component>Aggregation Framework</component>
                                        <votes>1</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="430766" author="redbeard0531" created="Tue, 24 Sep 2013 21:58:05 +0000"  >&lt;p&gt;yes&lt;/p&gt;</comment>
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