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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-81102] Mirrored Reads has its own client metadata showing up in $queryStats</title>
                <link>https://jira.mongodb.org/browse/SERVER-81102</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Reported by &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=jmo%2Bmms%40john-morales.com&quot; class=&quot;user-hover&quot; rel=&quot;jmo+mms@john-morales.com&quot;&gt;jmo+mms@john-morales.com&lt;/a&gt; :&lt;/p&gt;

&lt;p&gt;Mirrored reads (on by default since 4.4) result in quite few query stats entries on the secondaries. I suppose eventually all the access patterns on the primary will be observed as a queryStats entries on the secondaries, too. And further, these mirrored entries have the client metadata as mongod&apos;s internal client, rather than the customer&apos;s driver client metadata.&lt;/p&gt;

&lt;p&gt;I suppose this could all be fine and expected behavior. From analysis point of view, they may not be the most interesting entries to include with analysis - but on the other hand, they do seem to be easily identifiable, so if nothing else our GTM/DW could just filter these out.&lt;/p&gt;

&lt;p&gt;I think not having the customer&apos;s client metadata but rather mongod&apos;s client driver name of &lt;tt&gt;&apos;NetworkInterfaceTL-MirrorMaestro&apos;&lt;/tt&gt; was the main thing that caught my attention.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2443368">SERVER-81102</key>
            <summary>Mirrored Reads has its own client metadata showing up in $queryStats</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13202">Works as Designed</resolution>
                                        <assignee username="backlog-query-integration">Backlog - Query Integration</assignee>
                                    <reporter username="memento@mongodb.com">Memento Slack Bot</reporter>
                        <labels>
                            <label>querystats-7.1-qa</label>
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                <created>Fri, 15 Sep 2023 15:14:45 +0000</created>
                <updated>Wed, 8 Nov 2023 19:54:03 +0000</updated>
                            <resolved>Wed, 8 Nov 2023 19:54:03 +0000</resolved>
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