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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-66102] Change column_scan stage to read from actual column store</title>
                <link>https://jira.mongodb.org/browse/SERVER-66102</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The column_scan SBE stage currently reads from a &quot;fake&quot; column store. See &lt;a href=&quot;https://github.com/mongodb/mongo/blob/77d687fef953493da281bc908aeb0f9216ee02e0/src/mongo/db/exec/sbe/stages/column_scan.cpp#L240&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;. We must change it to read from the true column store.&lt;/p&gt;

&lt;p&gt;As part of this work, we should also make sure the column_scan stage handles yielding correctly. Any data pointed to by a column cursor will be invalid after a yield, so we should make local copies in saveState().&lt;/p&gt;
</description>
                <environment></environment>
        <key id="2037067">SERVER-66102</key>
            <summary>Change column_scan stage to read from actual column store</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="ian.boros@mongodb.com">Ian Boros</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                    </labels>
                <created>Sun, 1 May 2022 17:06:46 +0000</created>
                <updated>Sun, 29 Oct 2023 21:38:45 +0000</updated>
                            <resolved>Wed, 1 Jun 2022 17:53:06 +0000</resolved>
                                                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4543554" author="xgen-internal-githook" created="Wed, 11 May 2022 23:03:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;borosaurus&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66102&quot; title=&quot;Change column_scan stage to read from actual column store&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66102&quot;&gt;&lt;del&gt;SERVER-66102&lt;/del&gt;&lt;/a&gt; Change column scan stage to read from true column index&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/83ae5393284912aded0087fd2cdf79edff6f999f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/83ae5393284912aded0087fd2cdf79edff6f999f&lt;/a&gt;&lt;/p&gt;</comment>
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