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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-76952] Allow hash_agg stage to early terminate accumulator processing</title>
                <link>https://jira.mongodb.org/browse/SERVER-76952</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Right now the Classic engine has an optimization to &lt;a href=&quot;https://github.com/10gen/mongo/blob/772fb2aff2b49da52b26c4240bd366eb576396f7/src/mongo/db/pipeline/document_source_group_base.cpp#L537-L539&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;early terminate the accumulator processing&lt;/a&gt; when the accumulator will no longer be affected, for example, $first and $firstN. This optimization is missing in SBE, which may cause unnecessary overhead including accumulator argument evaluation, extra VM calls and so on.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2336045">SERVER-76952</key>
            <summary>Allow hash_agg stage to early terminate accumulator processing</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="projjal.chanda@mongodb.com">Projjal Chanda</assignee>
                                    <reporter username="rui.liu@mongodb.com">Rui Liu</reporter>
                        <labels>
                    </labels>
                <created>Tue, 9 May 2023 17:00:18 +0000</created>
                <updated>Sun, 29 Oct 2023 21:21:46 +0000</updated>
                            <resolved>Tue, 16 May 2023 08:51:02 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5426803" author="xgen-internal-githook" created="Mon, 15 May 2023 23:23:41 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Projjal Chanda&apos;, &apos;email&apos;: &apos;projjal.chanda@mongodb.com&apos;, &apos;username&apos;: &apos;projjal&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76952&quot; title=&quot;Allow hash_agg stage to early terminate accumulator processing&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76952&quot;&gt;&lt;del&gt;SERVER-76952&lt;/del&gt;&lt;/a&gt;: Skip processing accumulator when the result is no longer affected&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/427574c5614a3a3587b4a6563823149d60e71543&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/427574c5614a3a3587b4a6563823149d60e71543&lt;/a&gt;&lt;/p&gt;</comment>
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