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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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<item>
            <title>[SERVER-17770] CollectionLock::relockWithMode() shouldn&apos;t relock database</title>
                <link>https://jira.mongodb.org/browse/SERVER-17770</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The CollectionLock undocumented method relockWithMode() confusingly relocks the associated database lock as a side effect.  This is unintuitive and often introduces scenarios where redundant locks are held.&lt;/p&gt;

&lt;p&gt;For example: supposing a client holds database IX and collection IX.  It is not expected that relocking the collection lock in X would also relock the database lock in X as a side effect (in which the reacquisition of the collection lock becomes redundant).&lt;/p&gt;

&lt;p&gt;This method was introduced to facilitate the implicit collection creation path, and so existing callers that rely on this behavior will need an audit.  This implicit collection creation use case should be kept in mind when deciding how to further improve the locking API.&lt;/p&gt;</description>
                <environment></environment>
        <key id="192496">SERVER-17770</key>
            <summary>CollectionLock::relockWithMode() shouldn&apos;t relock database</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="geert.bosch@mongodb.com">Geert Bosch</assignee>
                                    <reporter username="rassi">J Rassi</reporter>
                        <labels>
                    </labels>
                <created>Fri, 27 Mar 2015 17:02:25 +0000</created>
                <updated>Sat, 19 Sep 2015 00:17:14 +0000</updated>
                            <resolved>Sat, 25 Apr 2015 00:23:13 +0000</resolved>
                                                    <fixVersion>3.1.2</fixVersion>
                                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="897957" author="xgen-internal-githook" created="Sat, 25 Apr 2015 00:22:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;GeertBosch&apos;, u&apos;name&apos;: u&apos;Geert Bosch&apos;, u&apos;email&apos;: u&apos;geert@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-17770&quot; title=&quot;CollectionLock::relockWithMode() shouldn&amp;#39;t relock database&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-17770&quot;&gt;&lt;del&gt;SERVER-17770&lt;/del&gt;&lt;/a&gt;: Replace CollectionLock::relockWithMode by relockAsDatabaseExclusive&lt;/p&gt;

&lt;p&gt;Previous version was confusing. This really has just a single purpose, so&lt;br/&gt;
make that clear.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/33974f928d1a970b7b373e8fa8b97ba13ce14b2e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/33974f928d1a970b7b373e8fa8b97ba13ce14b2e&lt;/a&gt;&lt;/p&gt;</comment>
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