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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-12306] OLAP Querying on a sharded cluster</title>
                <link>https://jira.mongodb.org/browse/SERVER-12306</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have received a number of inquiries from new MongoDB users regarding using our OLAP engine against MongoDB sharded clusters.&lt;/p&gt;

&lt;p&gt;There is concern about our mechanism of aggregation to get data from Mongo, which is to use agg pipeline commands.&lt;/p&gt;

&lt;p&gt;Are there special concerns that we need to be aware of in a sharded environment?&lt;/p&gt;

&lt;p&gt;We are essentially going to rely on Mongo to handle the data sharding and query for the data from a primary server via Agg Pipeline. We are working from the assumption that Mongo is already able to handle grouping &amp;amp; sorting at individual sharded nodes.&lt;/p&gt;

&lt;p&gt;Is this an acceptable assumption?&lt;/p&gt;</description>
                <environment></environment>
        <key id="105361">SERVER-12306</key>
            <summary>OLAP Querying on a sharded cluster</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="-1">Unassigned</assignee>
                                    <reporter username="kromerm">Mark Kromer</reporter>
                        <labels>
                    </labels>
                <created>Thu, 9 Jan 2014 18:43:40 +0000</created>
                <updated>Thu, 9 Jan 2014 21:01:16 +0000</updated>
                            <resolved>Thu, 9 Jan 2014 21:01:16 +0000</resolved>
                                    <version>2.5.3</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="479802" author="scotthernandez" created="Thu, 9 Jan 2014 21:01:16 +0000"  >&lt;p&gt;Mark, marking this the same as &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12100&quot; title=&quot;What are the common document structures used by MongoDB for analytical models&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12100&quot;&gt;&lt;del&gt;SERVER-12100&lt;/del&gt;&lt;/a&gt; since it is the same type of question which belongs elsewhere.&lt;/p&gt;</comment>
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