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    <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-68914] [CQF] Fix object ownership issues of data members of the Memo class</title>
                <link>https://jira.mongodb.org/browse/SERVER-68914</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The Memo class contains the following members: &lt;a href=&quot;https://github.com/10gen/mongo/blob/3eefb8461cf7d4bd87c4b1e671666d3a399f9fd4/src/mongo/db/query/optimizer/cascades/memo.h#L242&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;const reference to Metadata&lt;/a&gt; and &lt;a href=&quot;https://github.com/10gen/mongo/blob/3eefb8461cf7d4bd87c4b1e671666d3a399f9fd4/src/mongo/db/query/optimizer/cascades/memo.h#L248&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;const DebugInfo&lt;/a&gt;. Both of these cause the Memo class to &lt;a href=&quot;https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#Rc-constref&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;not be copy assignable&lt;/a&gt;. This has many subtle downstream consequences, for example, OptPhaseManager&apos;s implicit move constructor leaves phaseManager.memo.metadata as a dangling reference. See this &lt;a href=&quot;https://mongodb.slack.com/archives/C1MT4NHF0/p1660233669063719?thread_ts=1660162442.976239&amp;amp;cid=C1MT4NHF0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;thread&lt;/a&gt; for more info.&lt;/p&gt;

&lt;p&gt;This ticket tracks work to rationalize and implement what the ownership model of these members should be in order to allow the OptPhaseManager to be properly moveable and the Memo copyable and movable.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2116298">SERVER-68914</key>
            <summary>[CQF] Fix object ownership issues of data members of the Memo class</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="svilen.mihaylov@mongodb.com">Svilen Mihaylov</assignee>
                                    <reporter username="ben.shteinfeld@mongodb.com">Ben Shteinfeld</reporter>
                        <labels>
                    </labels>
                <created>Wed, 17 Aug 2022 18:59:08 +0000</created>
                <updated>Sun, 29 Oct 2023 21:34:22 +0000</updated>
                            <resolved>Tue, 11 Oct 2022 16:11:38 +0000</resolved>
                                                    <fixVersion>6.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4894624" author="xgen-internal-githook" created="Tue, 11 Oct 2022 15:22:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Svilen Mihaylov&apos;, &apos;email&apos;: &apos;svilen.mihaylov@mongodb.com&apos;, &apos;username&apos;: &apos;smihaylov-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-68914&quot; title=&quot;[CQF] Fix object ownership issues of data members of the Memo class&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-68914&quot;&gt;&lt;del&gt;SERVER-68914&lt;/del&gt;&lt;/a&gt; &lt;span class=&quot;error&quot;&gt;&amp;#91;CQF&amp;#93;&lt;/span&gt; Fix object ownership issues of data members of the Memo class&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1c32a885922cf392ca8b88efa17927857f6b0a5c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1c32a885922cf392ca8b88efa17927857f6b0a5c&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2116383">SERVER-68919</issuekey>
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