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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-61569] Enable all accumulators for $group pushdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-61569</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="1927702">SERVER-61569</key>
            <summary>Enable all accumulators for $group pushdown</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="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="eric.cox@mongodb.com">Eric Cox</assignee>
                                    <reporter username="eric.cox@mongodb.com">Eric Cox</reporter>
                        <labels>
                    </labels>
                <created>Wed, 17 Nov 2021 19:34:34 +0000</created>
                <updated>Sun, 29 Oct 2023 21:45:52 +0000</updated>
                            <resolved>Thu, 2 Dec 2021 19:03:41 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4227790" author="xgen-internal-githook" created="Thu, 2 Dec 2021 19:00:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Eric Cox&apos;, &apos;email&apos;: &apos;eric.cox@mongodb.com&apos;, &apos;username&apos;: &apos;ericox&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61569&quot; title=&quot;Enable all accumulators for $group pushdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61569&quot;&gt;&lt;del&gt;SERVER-61569&lt;/del&gt;&lt;/a&gt; Enable all accumulators for  pushdown&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b0d8dbcb38b24ad474727e0fd95557bc038573fb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b0d8dbcb38b24ad474727e0fd95557bc038573fb&lt;/a&gt;&lt;/p&gt;</comment>
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                            <issuelinktype id="10320">
                    <name>Documented</name>
                                                                <inwardlinks description="is documented by">
                                        <issuelink>
            <issuekey id="1942421">DOCS-14965</issuekey>
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                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="1679156">SERVER-56072</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1884498">SERVER-60244</issuekey>
        </issuelink>
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                                        2 years, 9 weeks, 6 days ago
    
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                            <customfieldvalue>The explain plan will now contain a GROUP stage in the winninPlan part of the queryPlanner section of the explain plan. For an example see,&lt;br/&gt;
&lt;br/&gt;
	&amp;quot;winningPlan&amp;quot; : {&lt;br/&gt;
			&amp;quot;queryPlan&amp;quot; : {&lt;br/&gt;
				&amp;quot;stage&amp;quot; : &amp;quot;GROUP&amp;quot;,   &amp;lt;--- new node.&lt;br/&gt;
				&amp;quot;planNodeId&amp;quot; : 2,&lt;br/&gt;
				&amp;quot;inputStage&amp;quot; : {&lt;br/&gt;
					&amp;quot;stage&amp;quot; : &amp;quot;COLLSCAN&amp;quot;,&lt;br/&gt;
					&amp;quot;planNodeId&amp;quot; : 1,&lt;br/&gt;
					&amp;quot;filter&amp;quot; : {&lt;br/&gt;
&lt;br/&gt;
					},&lt;br/&gt;
					&amp;quot;direction&amp;quot; : &amp;quot;forward&amp;quot;&lt;br/&gt;
				}&lt;br/&gt;
			},&lt;br/&gt;
			&amp;quot;slotBasedPlan&amp;quot; : {&lt;br/&gt;
				&amp;quot;slots&amp;quot; : &amp;quot;$$RESULT=s11 env: { s2 = Nothing (SEARCH_META), s3 = 1638564533061 (NOW), s1 = TimeZoneDatabase(America/Argentina/Jujuy...America/Eirunepe) (timeZoneDB) }&amp;quot;,&lt;br/&gt;
				&amp;quot;stages&amp;quot; : &amp;quot;[2] mkbson s11 [_id = s7, s = s10] true false \n[2] project [s10 = doubleDoubleSumFinalize (s9)] \n[2] group [s7] [s9 = aggDoubleDoubleSum (s8)] \n[2] project [s8 = getField (s4, \&amp;quot;x\&amp;quot;)] \n[2] project [s7 = fillEmpty (s6, null)] \n[2] project [s6 = getField (s4, \&amp;quot;_idMod10\&amp;quot;)] \n[1] scan s4 s5 none none none none [] @\&amp;quot;9d840c15-b98e-4daf-a0d5-e79fdfa85311\&amp;quot; true false &amp;quot;&lt;br/&gt;
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