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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-20363] Aggregation&apos;s $push accumulator should error when it receives more than 16MB of data</title>
                <link>https://jira.mongodb.org/browse/SERVER-20363</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="229252">SERVER-20363</key>
            <summary>Aggregation&apos;s $push accumulator should error when it receives more than 16MB of data</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-optimization">Backlog - Query Optimization</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Thu, 10 Sep 2015 22:15:33 +0000</created>
                <updated>Tue, 6 Dec 2022 04:44:34 +0000</updated>
                                                                            <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1079634" author="redbeard0531" created="Wed, 4 Nov 2015 19:10:46 +0000"  >&lt;p&gt;Reopening following discussion. We should limit the size in $push since any operation that depends on pushing to an array &amp;gt;16MB is likely to fail anyway when sharded.&lt;/p&gt;</comment>
                            <comment id="1079627" author="charlie.swanson" created="Wed, 4 Nov 2015 19:02:52 +0000"  >&lt;p&gt;I&apos;m closing this ticket, because it strikes me that the current behavior is the correct behavior.&lt;/p&gt;

&lt;p&gt;The only restrictions we have on the size of the documents in the pipeline is that each must be at most 16MB by the end of the pipeline. Documents are allowed to exceed this size while being processed, so an array of 16MB might end up small enough to fit the size limit (e.g. by using a $slice, or an $arrayElemAt, etc.)&lt;/p&gt;

&lt;p&gt;cc &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=redbeard0531&quot; class=&quot;user-hover&quot; rel=&quot;redbeard0531&quot;&gt;redbeard0531&lt;/a&gt;&lt;/p&gt;</comment>
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