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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-10097] aggregation: support $out on a sharded cluster</title>
                <link>https://jira.mongodb.org/browse/SERVER-10097</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Implement output option for aggregation pipelines only to unsharded collections.  Input collections can be sharded.&lt;/p&gt;

&lt;p&gt;This should be considered a part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3253&quot; title=&quot;aggregation: unsharded support $out &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3253&quot;&gt;&lt;del&gt;SERVER-3253&lt;/del&gt;&lt;/a&gt;.  &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3253&quot; title=&quot;aggregation: unsharded support $out &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3253&quot;&gt;&lt;del&gt;SERVER-3253&lt;/del&gt;&lt;/a&gt; dealt with commits that only dealt with unsharded clusters.&lt;/p&gt;</description>
                <environment></environment>
        <key id="81206">SERVER-10097</key>
            <summary>aggregation: support $out on a sharded cluster</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="9">Done</resolution>
                                        <assignee username="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="dan@mongodb.com">Daniel Pasette</reporter>
                        <labels>
                    </labels>
                <created>Wed, 3 Jul 2013 18:58:04 +0000</created>
                <updated>Fri, 15 Nov 2013 20:04:16 +0000</updated>
                            <resolved>Thu, 8 Aug 2013 20:34:34 +0000</resolved>
                                                    <fixVersion>2.5.2</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>2</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="399291" author="auto" created="Fri, 9 Aug 2013 08:45:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tadmarshall&apos;, u&apos;name&apos;: u&apos;Tad Marshall&apos;, u&apos;email&apos;: u&apos;tad@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10097&quot; title=&quot;aggregation: support $out on a sharded cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10097&quot;&gt;&lt;del&gt;SERVER-10097&lt;/del&gt;&lt;/a&gt; Visual Studio &amp;#8211; add db/pipeline/document_source_merge_cursors.cpp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d679581a15dbbdbcc3541ad2b509e6e3567fa7ae&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d679581a15dbbdbcc3541ad2b509e6e3567fa7ae&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="398972" author="auto" created="Thu, 8 Aug 2013 20:25:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10097&quot; title=&quot;aggregation: support $out on a sharded cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10097&quot;&gt;&lt;del&gt;SERVER-10097&lt;/del&gt;&lt;/a&gt; sharded $out&lt;/p&gt;

&lt;p&gt;Note that all sharded aggregation tests now go through the&lt;br/&gt;
&quot;merge-on-mongod&quot; codepath now rather than the &quot;merge-in-mongos&quot;&lt;br/&gt;
codepath.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b51d448db276dba21766bd733b2dbab60f6789e0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b51d448db276dba21766bd733b2dbab60f6789e0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="398971" author="auto" created="Thu, 8 Aug 2013 20:25:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Make doingMerge a property of DocumentSourceGroup rather than ExpressionContext&lt;/p&gt;

&lt;p&gt;Prep for sharded $out (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10097&quot; title=&quot;aggregation: support $out on a sharded cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10097&quot;&gt;&lt;del&gt;SERVER-10097&lt;/del&gt;&lt;/a&gt;). Will need to be able to send a&lt;br/&gt;
merging $group to a shard.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8e93f578191525c7dd96d3e5ab85c66b4802df55&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8e93f578191525c7dd96d3e5ab85c66b4802df55&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="389722" author="auto" created="Fri, 26 Jul 2013 21:57:02 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: ExpressionContext now has the input namespace&lt;/p&gt;

&lt;p&gt;This reduces the amount of PipelineD injection and will make sharded&lt;br/&gt;
$out easier (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10097&quot; title=&quot;aggregation: support $out on a sharded cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10097&quot;&gt;&lt;del&gt;SERVER-10097&lt;/del&gt;&lt;/a&gt;).&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/21431f5bc46c292bd2962d5bf9aa16dc6f43a121&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/21431f5bc46c292bd2962d5bf9aa16dc6f43a121&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="21111">SERVER-3627</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="39610">SERVER-5932</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="67356">SERVER-8850</issuekey>
        </issuelink>
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                                        <issuelink>
            <issuekey id="85541">CSHARP-800</issuekey>
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            <issuelink>
            <issuekey id="84228">DRIVERS-111</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="10927">SERVER-447</issuekey>
        </issuelink>
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