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            <title>[SERVER-79764] Ensure that streaming group over TS keeps running fully classic</title>
                <link>https://jira.mongodb.org/browse/SERVER-79764</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;See PM-3050 &#8211; streaming group is one of the optimizations, added in that project. It replaces $group with $_internalStreamingGroup if the input into the group is sorted on time and the group&#8217;s key includes a monotonic derivative of time.&lt;/p&gt;

&lt;p&gt;$_internalStreamingGroup isn&#8217;t supported in SBE and while the query could benefit from lowering the prefix up to it, we&#8217;d rather not risk perf regressions and block it from running in the hybrid mode until $_internalStreamingGroup is implemented in SBE.&lt;/p&gt;</description>
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        <key id="2409643">SERVER-79764</key>
            <summary>Ensure that streaming group over TS keeps running fully classic</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="backlog-query-integration">Backlog - Query Integration</assignee>
                                    <reporter username="irina.yatsenko@mongodb.com">Irina Yatsenko</reporter>
                        <labels>
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                <created>Fri, 4 Aug 2023 20:12:40 +0000</created>
                <updated>Tue, 26 Sep 2023 22:04:48 +0000</updated>
                            <resolved>Tue, 26 Sep 2023 22:04:48 +0000</resolved>
                                                                                        <votes>0</votes>
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                                                                                                                <comments>
                            <comment id="5733013" author="JIRAUSER1259274" created="Tue, 26 Sep 2023 22:03:39 +0000"  >&lt;p&gt;The streaming group optimization requires sorting on time similar to the bounded sort optimization so we&apos;ll be blocking both by not allowing to lower to SBE pipelines with $sort on the timeField.&lt;/p&gt;</comment>
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