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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-18925] Merging part of aggregation pipeline should be performed on a random shard to distribute the load</title>
                <link>https://jira.mongodb.org/browse/SERVER-18925</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently the merging step of the pipeline is always performed on the primary shard for that database, but there is no reason it has to be. To help distribute the load, it should be sent to a random shard.&lt;/p&gt;</description>
                <environment></environment>
        <key id="210028">SERVER-18925</key>
            <summary>Merging part of aggregation pipeline should be performed on a random shard to distribute the load</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="james.cohan">James Cohan</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Thu, 11 Jun 2015 15:59:33 +0000</created>
                <updated>Tue, 6 Dec 2016 19:43:35 +0000</updated>
                            <resolved>Fri, 7 Aug 2015 21:37:01 +0000</resolved>
                                    <version>3.0.5</version>
                                    <fixVersion>3.1.7</fixVersion>
                                    <component>Aggregation Framework</component>
                    <component>Sharding</component>
                                        <votes>2</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="999851" author="xgen-internal-githook" created="Fri, 7 Aug 2015 21:30:06 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jamesfcohan&apos;, u&apos;name&apos;: u&apos;James Cohan&apos;, u&apos;email&apos;: u&apos;james.cohan@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18925&quot; title=&quot;Merging part of aggregation pipeline should be performed on a random shard to distribute the load&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18925&quot;&gt;&lt;del&gt;SERVER-18925&lt;/del&gt;&lt;/a&gt; Enable pipeline merging to happen on random shard when possible&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c54e23ccee372703cb2dc714762f9beaf4ad0e10&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c54e23ccee372703cb2dc714762f9beaf4ad0e10&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="153995">SERVER-14985</issuekey>
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            <issuekey id="336776">SERVER-27304</issuekey>
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            <issuekey id="191967">SERVER-17737</issuekey>
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