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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>
    </build-info>


<item>
            <title>[SERVER-45530] Implement $match and $project pushdown optimization into $unionWith sub-pipeline</title>
                <link>https://jira.mongodb.org/browse/SERVER-45530</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="1088586">SERVER-45530</key>
            <summary>Implement $match and $project pushdown optimization into $unionWith sub-pipeline</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="jacob.evans@mongodb.com">Jacob Evans</assignee>
                                    <reporter username="nicholas.zolnierz@mongodb.com">Nicholas Zolnierz</reporter>
                        <labels>
                    </labels>
                <created>Mon, 13 Jan 2020 21:27:12 +0000</created>
                <updated>Sun, 29 Oct 2023 22:13:22 +0000</updated>
                            <resolved>Mon, 10 Feb 2020 21:35:57 +0000</resolved>
                                                    <fixVersion>4.3.4</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2859694" author="xgen-internal-githook" created="Mon, 10 Feb 2020 21:34:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jacob Evans&apos;, &apos;email&apos;: &apos;jacob.evans@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45530&quot; title=&quot;Implement $match and $project pushdown optimization into $unionWith sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45530&quot;&gt;&lt;del&gt;SERVER-45530&lt;/del&gt;&lt;/a&gt; Implement $match and $project duplication and pushdown across $unionWith&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/eb7f1c54a54bf5eb82f633b60e7c918a02adb55c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/eb7f1c54a54bf5eb82f633b60e7c918a02adb55c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2843457" author="xgen-internal-githook" created="Fri, 7 Feb 2020 22:37:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;William Schultz&apos;, &apos;username&apos;: &apos;will62794&apos;, &apos;email&apos;: &apos;william.schultz@mongodb.com&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45530&quot; title=&quot;Implement $match and $project pushdown optimization into $unionWith sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45530&quot;&gt;&lt;del&gt;SERVER-45530&lt;/del&gt;&lt;/a&gt; Implement $match and $project duplication and pushdown across $unionWith&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 9955e3ab374e26b8428378dfabf94ce89f00aaa6.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b11d1174d98481c497d26728d0fa21e54192b712&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b11d1174d98481c497d26728d0fa21e54192b712&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2843403" author="william.schultz" created="Fri, 7 Feb 2020 22:27:36 +0000"  >&lt;p&gt;Reverting again since db_pipeline_test is broken after &lt;a href=&quot;https://github.com/mongodb/mongo/commit/9955e3ab374e26b8428378dfabf94ce89f00aaa6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this commit&lt;/a&gt;. &lt;/p&gt;</comment>
                            <comment id="2841997" author="xgen-internal-githook" created="Fri, 7 Feb 2020 20:31:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jacob Evans&apos;, &apos;email&apos;: &apos;jacob.evans@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45530&quot; title=&quot;Implement $match and $project pushdown optimization into $unionWith sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45530&quot;&gt;&lt;del&gt;SERVER-45530&lt;/del&gt;&lt;/a&gt; Implement $match and $project duplication and pushdown across $unionWith&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9955e3ab374e26b8428378dfabf94ce89f00aaa6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9955e3ab374e26b8428378dfabf94ce89f00aaa6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2837616" author="xgen-internal-githook" created="Fri, 7 Feb 2020 14:47:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;will62794&apos;, &apos;name&apos;: &apos;William Schultz&apos;, &apos;email&apos;: &apos;william.schultz@mongodb.com&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45530&quot; title=&quot;Implement $match and $project pushdown optimization into $unionWith sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45530&quot;&gt;&lt;del&gt;SERVER-45530&lt;/del&gt;&lt;/a&gt; Implement $match and $project duplication and pushdown across $unionWith&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 942ec3300e82672536f34d8273314c5504ae91fb.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b52d0d06a080ac7b2879ebb7da4a551f5aa36610&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b52d0d06a080ac7b2879ebb7da4a551f5aa36610&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2837397" author="william.schultz" created="Fri, 7 Feb 2020 14:37:11 +0000"  >&lt;p&gt;This commit broke &lt;tt&gt;db_pipeline_test&lt;/tt&gt; on &lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_mongo_master_enterprise_rhel_62_64_bit_unittests_942ec3300e82672536f34d8273314c5504ae91fb_20_02_06_23_20_39&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;required builders&lt;/a&gt;. Revert is in the commit queue.&lt;/p&gt;</comment>
                            <comment id="2820333" author="xgen-internal-githook" created="Thu, 6 Feb 2020 23:20:55 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jacob Evans&apos;, &apos;email&apos;: &apos;jacob.evans@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45530&quot; title=&quot;Implement $match and $project pushdown optimization into $unionWith sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45530&quot;&gt;&lt;del&gt;SERVER-45530&lt;/del&gt;&lt;/a&gt; Implement $match and $project duplication and pushdown across $unionWith&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/942ec3300e82672536f34d8273314c5504ae91fb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/942ec3300e82672536f34d8273314c5504ae91fb&lt;/a&gt;&lt;/p&gt;</comment>
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                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="1079634">SERVER-45399</issuekey>
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                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="1088588">SERVER-45531</issuekey>
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            <issuelink>
            <issuekey id="1110156">SERVER-45712</issuekey>
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