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            <title>[SERVER-71446] Allow a streaming group to execute on shards in parallel</title>
                <link>https://jira.mongodb.org/browse/SERVER-71446</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70267&quot; title=&quot;Streaming group when id is on time&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70267&quot;&gt;&lt;del&gt;SERVER-70267&lt;/del&gt;&lt;/a&gt; we implemented a special case for a $sort + $group on a time-series collection, related to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4507&quot; title=&quot;aggregation:  optimize $group to take advantage of sorted sequences&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4507&quot;&gt;SERVER-4507&lt;/a&gt;.  In that ticket we deferred work to fully optimize the sharded execution plan.&lt;/p&gt;

&lt;p&gt;We believe we should be able to hook things up to make it so that each shard performs its own streaming $group, the merger node will perform a sorted merge, and then we can finish with another streaming $group. &lt;/p&gt;</description>
                <environment></environment>
        <key id="2188628">SERVER-71446</key>
            <summary>Allow a streaming group to execute on shards in parallel</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
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                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
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                <created>Thu, 17 Nov 2022 13:38:15 +0000</created>
                <updated>Mon, 5 Dec 2022 20:10:55 +0000</updated>
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