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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-9176] Move powerOfTwo check outside regular ttl loop</title>
                <link>https://jira.mongodb.org/browse/SERVER-9176</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In addition there is no need to take a write lock out unless the setting has to be changed. If power-of-2 allocation is not required for TTL collections we should move this check to the index creation.&lt;/p&gt;

&lt;p&gt;This code also doesn&apos;t need to check on every iteration like this and would only need to check once per collection.&lt;/p&gt;

&lt;p&gt;If we had some internal notification system for collection/index create/delete it would be easier to ensure this without checking all the time.&lt;/p&gt;</description>
                <environment></environment>
        <key id="70178">SERVER-9176</key>
            <summary>Move powerOfTwo check outside regular ttl loop</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="kyle.suarez@mongodb.com">Kyle Suarez</assignee>
                                    <reporter username="scotthernandez">Scott Hernandez</reporter>
                        <labels>
                            <label>ttl</label>
                    </labels>
                <created>Fri, 29 Mar 2013 15:50:53 +0000</created>
                <updated>Thu, 25 Feb 2016 01:08:12 +0000</updated>
                            <resolved>Thu, 25 Feb 2016 01:08:12 +0000</resolved>
                                                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1183962" author="kyle.suarez" created="Thu, 25 Feb 2016 01:08:12 +0000"  >&lt;p&gt;There doesn&apos;t appear to be a powerOfTwo check in the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/ttl.cpp#L122&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;TTL loop&lt;/a&gt;, so I&apos;m closing this as Gone Away.&lt;/p&gt;</comment>
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