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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-8850] $tee command for aggregation framework </title>
                <link>https://jira.mongodb.org/browse/SERVER-8850</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This will provide our aggregation pipeline the same kind of functionality as a unix &lt;b&gt;tee&lt;/b&gt; command, where the partial results could be redirected to a separate collection or file&lt;br/&gt;
While aggregating if we could have the capacity to access partial results and then further continue the aggregation pipeline this can be beneficial for several analytics calculations and post aggregation analysis. &lt;/p&gt;</description>
                <environment></environment>
        <key id="67356">SERVER-8850</key>
            <summary>$tee command for aggregation framework </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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="norberto.leite">Norberto Fernando Rocha Leite</reporter>
                        <labels>
                    </labels>
                <created>Tue, 5 Mar 2013 15:14:24 +0000</created>
                <updated>Tue, 16 Nov 2021 17:53:01 +0000</updated>
                            <resolved>Tue, 5 Mar 2013 15:20:40 +0000</resolved>
                                                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1562857" author="thomas.schubert" created="Tue, 2 May 2017 19:58:08 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=norberto.leite&quot; class=&quot;user-hover&quot; rel=&quot;norberto.leite&quot;&gt;norberto.leite&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;We&apos;re tracking this work in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-28954&quot; title=&quot;Multiple out stages in aggregate&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-28954&quot;&gt;SERVER-28954&lt;/a&gt;. Please feel free to vote for it and watch it for updates.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="606229" author="JIRAUSER1257127" created="Tue, 3 Jun 2014 13:39:00 +0000"  >&lt;p&gt;@Eliot, I think you can only add $out at the very end, otherwise you are right, that would do the trick&lt;/p&gt;</comment>
                            <comment id="281795" author="eliot" created="Tue, 5 Mar 2013 15:20:40 +0000"  >&lt;p&gt;if you put an $out in the middle of a pipeline it will do this&lt;/p&gt;</comment>
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            <issuekey id="81206">SERVER-10097</issuekey>
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