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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-21815] Index access stats only records user operations</title>
                <link>https://jira.mongodb.org/browse/SERVER-21815</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;As of 3.2.0, index access statistics are only recorded for user operations. We do not record index use by internal operations, which include:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;TTL index use to remove expired documents.&lt;/li&gt;
	&lt;li&gt;Index usage for chunk split, move and post-move deletion.&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;We need to either:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Make clear in our documentation that statistics are only recorded for user operations.&lt;/li&gt;
	&lt;li&gt;or add index access recording for these operations&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="243018">SERVER-21815</key>
            <summary>Index access stats only records user operations</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="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="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="james.wahlin@mongodb.com">James Wahlin</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Dec 2015 17:47:44 +0000</created>
                <updated>Tue, 6 Dec 2022 04:38:00 +0000</updated>
                            <resolved>Fri, 11 Dec 2015 20:16:55 +0000</resolved>
                                    <version>3.2.0</version>
                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1112476" author="david.storch" created="Fri, 11 Dec 2015 20:16:44 +0000"  >&lt;p&gt;The intended behavior, at least for the time being, is that indexUsageStats only count operations initiated by a user operation on the client. This will be documented in &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-6765&quot; title=&quot;$indexStats only reports index accesses for user operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-6765&quot;&gt;&lt;del&gt;DOCS-6765&lt;/del&gt;&lt;/a&gt;. Closing as &quot;Works as Designed&quot;. If in the future we find that the user workflow around indexUsageStats would be simplified by counting internally issued operations, we can reconsider.&lt;/p&gt;</comment>
                            <comment id="1109712" author="james.wahlin@10gen.com" created="Wed, 9 Dec 2015 18:04:17 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-6765&quot; title=&quot;$indexStats only reports index accesses for user operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-6765&quot;&gt;&lt;del&gt;DOCS-6765&lt;/del&gt;&lt;/a&gt; created to adjust our documentation.&lt;/p&gt;</comment>
                            <comment id="1109698" author="dan@10gen.com" created="Wed, 9 Dec 2015 17:58:18 +0000"  >&lt;p&gt;Should note in docs in the meantime &lt;/p&gt;</comment>
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