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            <title>[SERVER-45855] The &apos;Top&apos; command managing its own data in the UsageMap is error prone which causes memory leaks</title>
                <link>https://jira.mongodb.org/browse/SERVER-45855</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After diagnosing a customer issue (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45137&quot; title=&quot;Increasing memory allocation in Top::record with high rate of collection creates and drops&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45137&quot;&gt;&lt;del&gt;SERVER-45137&lt;/del&gt;&lt;/a&gt;) where Top was allocating memory to record collection information and not deallocating it once the collection was removed, I believe we should set out to improve the &apos;Top&apos; command in regards to its data management.&lt;/p&gt;

&lt;p&gt;Forgetting to clear collection information from Top comes with consequences, such as running out of memory for long enough running processes. We should have a mechanism in Top that guarantees the collection information will be cleared once the collection is dropped. Making the Top data as a decoration on the collection is one way we could ensure this, it would even handle a collection rename for us.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1121158">SERVER-45855</key>
            <summary>The &apos;Top&apos; command managing its own data in the UsageMap is error prone which causes memory leaks</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>
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                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</reporter>
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                <created>Thu, 30 Jan 2020 01:22:25 +0000</created>
                <updated>Tue, 6 Dec 2022 02:37:00 +0000</updated>
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