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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-2876] system.js + Sharding</title>
                <link>https://jira.mongodb.org/browse/SERVER-2876</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When depending on JS stored on the server side the functionality fails if a collection is a sharded.&lt;/p&gt;

&lt;p&gt;Server-side JS:&lt;br/&gt;
&lt;a href=&quot;http://www.mongodb.org/display/DOCS/Server-side+Code+Execution#Server-sideCodeExecution-Storingfunctionsserverside&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.mongodb.org/display/DOCS/Server-side+Code+Execution#Server-sideCodeExecution-Storingfunctionsserverside&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Looking at the Sharding Limits, this is not clearly stated:&lt;br/&gt;
&lt;a href=&quot;http://www.mongodb.org/display/DOCS/Sharding+Limits&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.mongodb.org/display/DOCS/Sharding+Limits&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;There&apos;s a mention that db.eval() fails, but no clarification that this includes server-side JS. Additionally, the docs state that $where works, but if the $where is dependent on the server-side JS, then it too will fail.&lt;/p&gt;

&lt;p&gt;In theory, this can be worked around by adding the same function to each shard individually, but this is bad practice.&lt;/p&gt;

&lt;p&gt;======&lt;br/&gt;
Options:&lt;/p&gt;

&lt;p&gt;1. Disallow server-side JS in sharded scenarios&lt;br/&gt;
2. Add this functionality so that server-side JS is &quot;replicated&quot; across shards&lt;/p&gt;

&lt;p&gt;======&lt;/p&gt;

&lt;p&gt;In case #1, we get an instance where mongoS behaves differently than mongoD&lt;br/&gt;
In case #2, we get consistent behavior between mongoS and mongoD, but we have to implement special behavior for a particular collection (mind you it &lt;em&gt;is&lt;/em&gt; a system collection).&lt;/p&gt;</description>
                <environment></environment>
        <key id="15397">SERVER-2876</key>
            <summary>system.js + Sharding</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="gatesvp">Gaetan Voyer-Perrault</reporter>
                        <labels>
                    </labels>
                <created>Thu, 31 Mar 2011 00:05:01 +0000</created>
                <updated>Thu, 31 Mar 2011 00:31:47 +0000</updated>
                            <resolved>Thu, 31 Mar 2011 00:31:47 +0000</resolved>
                                    <version>1.8.0</version>
                                                    <component>JavaScript</component>
                    <component>MapReduce</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="27358" author="eliot" created="Thu, 31 Mar 2011 00:31:47 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-925&quot; title=&quot;support for stored js &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-925&quot;&gt;&lt;del&gt;SERVER-925&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
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