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    <title>MongoDB Jira</title>
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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-82641] Only materialize result doc once in buildUnwind()</title>
                <link>https://jira.mongodb.org/browse/SERVER-82641</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;From &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=justin.seyster%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;justin.seyster@mongodb.com&quot;&gt;justin.seyster@mongodb.com&lt;/a&gt; &apos;s code review of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-80563&quot; title=&quot;Push $unwind aggregation stage down to SBE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-80563&quot;&gt;&lt;del&gt;SERVER-80563&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://github.com/10gen/mongo/pull/15298&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;PR 15298&lt;/a&gt;, in reference to sbe_stage_builder.cpp &lt;b&gt;buildUnwind()&lt;/b&gt;:&lt;/p&gt;

&lt;p&gt;&quot;$unwind stages that request an index will need to materialize a BSON document twice: once to add the index and once to add the unwound field. Would it be practical to use one generateProject call that adds both fields in the same path?&quot;&lt;/p&gt;

&lt;p&gt;This ticket is to address that issue.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2487238">SERVER-82641</key>
            <summary>Only materialize result doc once in buildUnwind()</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="kevin.cherkauer@mongodb.com">Kevin Cherkauer</assignee>
                                    <reporter username="kevin.cherkauer@mongodb.com">Kevin Cherkauer</reporter>
                        <labels>
                    </labels>
                <created>Tue, 31 Oct 2023 21:30:51 +0000</created>
                <updated>Wed, 29 Nov 2023 13:28:52 +0000</updated>
                            <resolved>Tue, 21 Nov 2023 20:32:46 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5896547" author="xgen-internal-githook" created="Tue, 21 Nov 2023 19:40:29 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Kevin Cherkauer&apos;, &apos;email&apos;: &apos;kevin.cherkauer@mongodb.com&apos;, &apos;username&apos;: &apos;kevin-cherkauer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82641&quot; title=&quot;Only materialize result doc once in buildUnwind()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82641&quot;&gt;&lt;del&gt;SERVER-82641&lt;/del&gt;&lt;/a&gt; Only materialize result doc once in buildUnwind()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a38a340dca5c4e240292e00aa0da8b323b01c320&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a38a340dca5c4e240292e00aa0da8b323b01c320&lt;/a&gt;&lt;/p&gt;</comment>
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                            <attachment id="489514" name="bf30701.sv82641_partial_fix.numbers" size="193934" author="kevin.cherkauer@mongodb.com" created="Mon, 13 Nov 2023 23:31:04 +0000"/>
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