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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-60067] When index is dropped invalidate only SBE plan cache entries which depend on it</title>
                <link>https://jira.mongodb.org/browse/SERVER-60067</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is a continuation of the work started in&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60066&quot; title=&quot;Implement plan cache invalidation on collection drop&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60066&quot;&gt;&lt;del&gt;SERVER-60066&lt;/del&gt;&lt;/a&gt;. We need to enhance a plan cache invalidation mechanism when an index is dropped to evict only those plan cache entries which hold plans which depend on the dropped index.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1878093">SERVER-60067</key>
            <summary>When index is dropped invalidate only SBE plan cache entries which depend on it</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-query-optimization">Backlog - Query Optimization</assignee>
                                    <reporter username="anton.korshunov@mongodb.com">Anton Korshunov</reporter>
                        <labels>
                    </labels>
                <created>Sun, 19 Sep 2021 23:07:20 +0000</created>
                <updated>Tue, 6 Dec 2022 00:55:32 +0000</updated>
                            <resolved>Thu, 3 Feb 2022 20:24:50 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4334389" author="david.storch" created="Thu, 3 Feb 2022 20:24:50 +0000"  >&lt;p&gt;We&apos;re no longer planning to implement this improvement as part of the SBE plan cache project, for a few reasons:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;The classic plan cache had similar behavior around cache invalidation when catalog entries occur, so we won&apos;t regress. We also don&apos;t necessarily have a strong motivation to improve this behavior as part of building the SBE plan cache.&lt;/li&gt;
	&lt;li&gt;We&apos;re unlikely to have time for it given our current schedule.&lt;/li&gt;
	&lt;li&gt;We don&apos;t currently have a design for how this will work. It&apos;s unclear how the new plan cache invalidation behavior would interact with the cache key versioning scheme that we introduced under &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60066&quot; title=&quot;Implement plan cache invalidation on collection drop&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60066&quot;&gt;&lt;del&gt;SERVER-60066&lt;/del&gt;&lt;/a&gt;.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;CC &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=anton.korshunov&quot; class=&quot;user-hover&quot; rel=&quot;anton.korshunov&quot;&gt;anton.korshunov&lt;/a&gt;&lt;/p&gt;</comment>
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