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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-10149] Add new mongos &quot;--broadcastWarn&quot; option to warn on scatter/gather queries</title>
                <link>https://jira.mongodb.org/browse/SERVER-10149</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Non-targeted (or scatter/gather) queries can severely hurt the performance of a sharded cluster.  Furthermore, scatter/gather queries can be hard to find and debug: enable profiling on a shard&apos;s primary (and potentially secondaries), profile every query, runs queries against the system.profile collection to find queries without the shard key.&lt;/p&gt;

&lt;p&gt;This becomes more complex when there are tens of sharded collections across multiple databases.&lt;/p&gt;

&lt;p&gt;A simple warning message in the mongos logs would help incredibly:&lt;/p&gt;

&lt;p&gt;&quot;warning: broadcast query &lt;/p&gt;
{...}
&lt;p&gt;&quot;   &lt;/p&gt;</description>
                <environment></environment>
        <key id="81753">SERVER-10149</key>
            <summary>Add new mongos &quot;--broadcastWarn&quot; option to warn on scatter/gather queries</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="jason.zucchetto">Jason Zucchetto</reporter>
                        <labels>
                    </labels>
                <created>Tue, 9 Jul 2013 21:18:19 +0000</created>
                <updated>Wed, 10 Dec 2014 23:14:56 +0000</updated>
                            <resolved>Wed, 10 Jul 2013 03:53:38 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="377760" author="eliot" created="Wed, 10 Jul 2013 03:53:38 +0000"  >&lt;p&gt;Don&apos;t think is any different than any other cause of a slow query.&lt;br/&gt;
So I think &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2926&quot; title=&quot;mongos should log slow queries&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2926&quot;&gt;&lt;del&gt;SERVER-2926&lt;/del&gt;&lt;/a&gt; is the thing we&apos;ll do, and then maybe we&apos;ll see.&lt;/p&gt;</comment>
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